Goods & Services

Apparatus for sound recording, transmission, reproduction, amplification or processing (not related to recording, transmission, reproduction, amplification or processing via satellite); loudspeakers; speakers (loudspeakers); sound amplifiers; earphones; in-ear headphones; audio headphones; radios; mixing desks; sound data processors; sound data converters; sound bars; electro-acoustic apparatus; microphones; home theater projectors; home-theater audio equipment and systems; car radios; remote controls for loudspeaker cabinets; remote controls for stereos; remote controls for radios; stands for loudspeaker cabinets; holders for amplifiers.

Goods & Services

appareils pour l’enregistrement, la transmission, la reproduction, l’amplification ou le traitement du son (sans rapport avec l'enregistrement, la transmission, la reproduction, l'amplification ou le traitement par satellite); haut-parleurs; enceintes; amplificateurs de son; écouteurs; écouteurs intra-auriculaires; casques audio; appareils de radio; tables de mixage; processeurs de données sonores; convertisseurs de données sonores; barres de son; appareils électro-acoustiques; microphones; projecteurs de home cinéma; systèmes et équipements audio de home cinéma; autoradios; télécommandes pour enceintes acoustiques; télécommandes pour chaînes stéréo; télécommandes pour appareils de radio; supports pour enceintes acoustiques; supports pour amplificateurs.

Abstract

The sound reproduction installation (10) includes sound reproduction equipment (12, 14), each comprising: an internal clock (22); means (20) for receiving synchronization time information; means (30) for receiving an audio stream to be reproduced, including time reproduction information; and means (52) for audio reproduction of the audio stream on the basis of the internal clock (22). The sound reproduction installation (10) includes sound reproduction equipment (12, 14), each comprising: an internal clock (22); means (20) for receiving synchronization time information; means (30) for receiving an audio stream to be reproduced, including time reproduction information; and means (52) for audio reproduction of the audio stream on the basis of the internal clock (22). The means (20) for receiving time synchronization information are able to receive the TSF signals from a single Wi-Fi network (16) having a single BSSID address for all the equipment (12, 14), and each piece of equipment (12, 14) includes means (26) for slaving the internal clock (22) to the TSF signal received.

IPC Classes  ?

• H04W 56/00 - Synchronisation arrangements
• H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers

Abstract

The headset includes an electro-acoustic transducer, at least one noise reduction processing chain including external and internal microphones, a processing filter including mounted in parallel between the external microphone and an adder, at least one elementary filter each including a recursive filter and an elementary variable gain amplifier, a control unit for the gain of each elementary amplifier according to a signal coming from the external microphone and an error signal coming from the internal microphone. The headset includes an electro-acoustic transducer, at least one noise reduction processing chain including external and internal microphones, a processing filter including mounted in parallel between the external microphone and an adder, at least one elementary filter each including a recursive filter and an elementary variable gain amplifier, a control unit for the gain of each elementary amplifier according to a signal coming from the external microphone and an error signal coming from the internal microphone. The processing filter includes an open-loop main filter connected at the input to the external microphone and the output of which is connected, to the adder, and to the input of the or each elementary filter.

IPC Classes  ?

• H04R 1/10 - EarpiecesAttachments therefor

Abstract

A method of synchronization of a slave master clock of a set of slave equipment with a master main clock of a set of master equipment, on the basis of a common time base, including receiving, by the master equipment and by the slave equipment, clock pulses from the common time base, performing, from the master equipment and the slave equipment, a master timestamping and a slave timestamping of clock pulses received on the basis of the common time base, on the base of the master and the slave main clocks, respectively, for generating the master and the slave timestamping information, communicating the master timestamping information to the slave equipment, and regulating, in the slave equipment, the slave main clock on the basis of the master timestamping information communicated and on the basis of the slave timestamping information generated.

IPC Classes  ?

• H04J 3/06 - Synchronising arrangements
• G05B 11/36 - Automatic controllers electric with provision for obtaining particular characteristics, e.g. proportional, integral, differential

Goods & Services

Apparatus for recording, transmission, reproduction, amplification or processing of sound or images; apparatus for recording, transmitting, reproducing, amplifying or processing of sound or images integrated into vehicles, fitness apparatus, sports equipment, tables or relaxation chairs; loudspeakers; speakers (loudspeakers); acoustic speakers and loudspeakers integrated into walls and ceilings; sound amplifiers; sound amplifiers for vehicles; computers; smartphones; tablet computers; earphones; in-ear headphones; audio headphones; radios; mixing desks; sound data processors; sound data converters; sound bars; electro-acoustic apparatus; microphones; home theater projectors; home-theater audio equipment and systems; car radios; acoustic or optical disks; compact disc players; DVD players; high-fidelity sound systems; television sets; video projectors; connection stations for digital players; remote controls for loudspeaker cabinets; connected speakers; portable speakers; remote controls for stereos; remote controls for televisions; remote controls for radios; stands for loudspeaker cabinets; portable docking stations with loudspeakers; holders for amplifiers; television supporting stand; sound cards; motherboards; apparatus and software for the improvement of analog and digital sound for the processing, recording, reproduction, streaming, transmission and reception of electronic or digital signals; television set-top boxes; wireless routers; vehicle radios; loudspeakers integrated into vehicles; loudspeakers integrated into armchairs; acoustic conduits for vehicles; diaphragms [acoustics] for vehicles; overhead projectors; GPS navigation devices integrated in vehicles; humanoid robots with artificial intelligence for scientific research purposes; telepresence robots; educational robots; surveillance robots for security; downloadable digital files authenticated by non-fungible tokens (NFTs) (wireless communication devices enabling the transmission of data); downloadable virtual products, namely, computer programs in connection with apparatus for recording, transmitting, reproducing, amplifying or processing of sound, for use online and in online virtual environments; downloadable mobile applications for controlling apparatus for recording, transmitting, reproducing, amplifying or processing of sound, for use online and in online virtual environments. Vehicles; air vehicles; land vehicles; space vehicles; airplanes; helicopters; boats; motor scooters; motorcycles; cars; yachts; trains [vehicles]; wheelchairs; head-rests for vehicle seats; vehicle seats; horns for vehicles; doors for vehicles. Customization of exterior, interior and mechanical parts of vehicles [tuning]; installation, adjustment, optimization and configuration of custom parts for vehicles [tuning]. Research and development of new products relating to acoustics; technological advice relating to acoustics and sound signal processing; technological advice and auditing with respect to acoustics; conducting technical project studies with respect to acoustics; developing and designing apparatus for recording, transmitting, reproducing, amplifying or processing sound.

Goods & Services

Apparatus for recording, transmitting, reproducing, amplifying or processing sound or images; Apparatus, for use in the following fields: Recording, transmission, reproduction, amplification or processing of sounds or images integrated in vehicles, fitness equipment, sports equipment, tables or lounge chairs; Loudspeaker systems; Loudspeakers; Public address speaker systems and Loudspeaker systems, The aforesaid goods being integrated into walls and ceilings; Audio amplifiers; Audio amplifiers, For use with the following goods: vehicles; Computers; Smartphones; Tablet computers; Headsets; In-ear headphones; Audio headphones; Radios; Mixing consoles; Sound data processors; Sound data converters; Soundbars; Electroacoustic apparatus; Microphones; Home theater projectors; Audio systems and equipment for home cinema; Car radios; Acoustic and optical discs; Compact disc players; DVD drives; Hi-fi systems; Television apparatus; Video projectors; Docking stations for digital players; Remote controls for public address speaker systems; Smart speakers; Portable speakers; Remote controls for stereos; Remote controls for televisions; Remote controls for radios; Stands for loudspeaker enclosures; Portable speaker docks; Racks for amplifiers; Stands for televisions; Sound cards; System boards (mother cards); Analog and digital sound enhancing apparatus and software for use in connection with the processing, recording, reproduction, streaming, transmission, and reception of electronic or digital signals; Television decoders; Wireless routers; Vehicle radios; Loudspeakers integrated into vehicles; Loudspeakers integrated into armchairs; Acoustic conduits, For use with the following goods: vehicles; acoustic diaphragms, For use with the following goods: vehicles; Slide projectors; Global positioning instruments, The aforesaid goods being integrated into vehicles; Humanoid robots with artificial intelligence for use in scientific research; Telepresence robots; Teaching robots; Security surveillance robots; Wireless communication devices for transmitting data, namely Downloadable digital files authenticated by non-fungible tokens [NFTs]; downloadable virtual goods, namely Software, in relation to the following goods: Apparatus for the recording, transmission, reproduction, amplification or processing of sound, The aforesaid products being for use online and in online virtual environments; Downloadable mobile applications enabling the control of apparatus for the recording, transmission, reproduction, amplification or processing of sound, The aforesaid products being for use online and in online virtual environments. Vehicles; Air vehicles; Vehicles for use on land; Space vehicles; Aeroplanes; Helicopters; Boats; Motor scooters; Motorcycles; Cars; Yachts; Trains [vehicles]; Wheelchairs; Head-rests for vehicle seats; Vehicle seats; Horns for vehicles; Doors for vehicles. Tuning, namely: Customisation of exterior, interior and mechanical parts of vehicles; Tuning, namely: Installation, regulation, optimisation and configuration of customisation elements of vehicles. Research and development of new products, in relation to the following fields: Acoustics; Consultancy, in relation to the following fields: Acoustics and sound signal processing; Tutorials and Auditing, in relation to the following fields: Acoustics; Conducting technical project studies, in relation to the following fields: Acoustics; Design and development, In connection with the following goods: Apparatus for the recording, transmission, reproduction, amplification or processing of sound.

Goods & Services

Apparatus for recording, transmission, reproduction, amplification or processing of sound or images; apparatus for recording, transmitting, reproducing, amplifying or processing of sound or images integrated into vehicles, fitness apparatus, sports equipment, tables or relaxation chairs; loudspeakers; speakers being loudspeakers; acoustic speakers and loudspeakers integrated into walls and ceilings; sound amplifiers; sound amplifiers for vehicles; computers; smartphones; tablet computers; earphones; in-ear headphones; audio headphones; radios; audio mixing desks; sound data processors; sound data converters, namely, analogue to digital converters; sound bars; electro-acoustic apparatus, namely, acoustic meters; microphones; home theater video projectors; home-theater audio equipment and systems comprised of loudspeakers, amplifiers, soundbar speakers, subwoofer speakers and audio cables; car radios; blank acoustic or optical disks; compact disc players; DVD players; high-fidelity sound systems comprised of loudspeakers, microphone stands and electric cables for transmission of audio; television sets; video projectors; connection stations for digital players, namely, connection cables; remote controls for loudspeaker cabinets; connected audio speakers; portable audio speakers; remote controls for stereos; remote controls for televisions; remote controls for radios; stands for loudspeaker cabinets; portable electronic docking stations with loudspeakers; holders for amplifiers; television supporting stand; sound cards; motherboards; apparatus in the nature of analog to digital converters and downloadable software for the improvement of analog and digital sound for the processing, recording, reproduction, streaming, transmission and reception of electronic or digital signals; television set-top boxes; wireless routers; vehicle radios; loudspeakers integrated into vehicles; loudspeakers integrated into armchairs; acoustic conduits for vehicles; diaphragms being acoustics membranes for vehicles; overhead projectors; GPS navigation devices integrated in vehicles; humanoid robots with artificial intelligence for scientific research purposes; telepresence robots; educational teaching robots; surveillance robots for security; downloadable digital music files authenticated by non-fungible tokens (NFTs); downloadable virtual products, namely, computer programs featuring apparatus for recording, transmitting, reproducing, amplifying or processing of sound, for use online and in online virtual environments; downloadable mobile applications for controlling apparatus for recording, transmitting, reproducing, amplifying or processing of sound, for use online and in online virtual environments Vehicles being land vehicles; air vehicles for transport; land vehicles; space vehicles; airplanes; helicopters; boats; motor scooters; motorcycles; cars; yachts; freight trains; wheelchairs; head-rests for vehicle seats; vehicle seats; horns for vehicles; doors for vehicles Customization of exterior, interior and mechanical parts of vehicles in the nature of automobile tuning services; installation, adjustment, optimization and configuration of custom parts for vehicles in the nature of automobile tuning services Research and development of new products relating to acoustics; technological advice relating to acoustics and sound signal processing for scientific purposes; technological advice and auditing with respect to acoustics for scientific purposes; conducting technical project studies in the nature of technological research in the field of acoustics; developing and designing apparatus for recording, transmitting, reproducing, amplifying or processing sound

Abstract

Motor vehicle with sound system A motor vehicle (10) defining a longitudinal axis (X), a front side, and a median (P) plane including the longitudinal axis (X) and which is vertical, and comprising: a structure (14) comprising a bulkhead (34), at least one front seat (26A) for a driver, and a floor covering (18), the bulkhead and the floor covering partially delimiting a passenger compartment (35), and a sound system (12) including at least one speaker enclosure (42) rigidly attached to the structure, the speaker enclosure comprising at least one woofer (50A) and being located close to the median plane (P): either longitudinally between the bulkhead and a front edge of the front seat, or longitudinally astride a front zone (40A) of the passenger compartment intended to receive the driver and a rear zone (40B) of the passenger compartment intended to receive one or more rear passengers of the motor vehicle.

IPC Classes  ?

• H04R 1/02 - CasingsCabinetsMountings therein
• H04R 9/06 - Loudspeakers
• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
• H04R 1/26 - Spatial arrangement of separate transducers responsive to two or more frequency ranges

Abstract

Acoustic loudspeaker (10) comprising a cabinet (12) extending in a direction (L), and a speaker (14) defining an acoustic axis (X). The cabinet defines a first axis (V1) perpendicular to the direction, and a second axis (V2) perpendicular to the direction and to the first axis. The acoustic loudspeaker is intended to be used in a first configuration, wherein the first axis is essentially vertical, and a second configuration, wherein the second axis is essentially vertical. The speaker is movable relative to the cabinet around an axis of rotation (D) between a first position, wherein the acoustic axis defines with the second axis a first angle less than 30°, and a second position, in which the acoustic axis defines with the first axis (V1) a second angle less than 30°. The axis of rotation makes two angles between 40° and 50° with the first axis and the second axis.

IPC Classes  ?

• H04R 1/34 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means

Goods & Services

Apparatus for recording, transmission, reproduction, amplification or processing of sound or images; loudspeakers; speakers (loudspeakers); sound amplifiers; computers; smartphones; tablet computers; earphones; in-ear headphones; audio headphones; radios; audio mixers; sound data processors; sound data converters; sound bars; electro-acoustic apparatus; microphones; home theater projectors; home-theater audio equipment and systems; car radios; acoustic or optical disks; compact disk players; DVD players; high-fidelity sound systems; television sets; video projectors; connection stations for digital players; remote controls for loudspeaker cabinets; connected speakers; portable acoustic speakers; remote controls for stereos; remote controls for televisions; remote controls for radios; stands for loudspeaker cabinets; portable docking stations with loudspeakers; holders for amplifiers; television supporting stand; sound cards; motherboards; apparatus and software for the improvement of analog and digital sound for the processing, recording, reproduction, streaming, transmission and reception of electronic or digital signals.

Abstract

The speaker comprises a magnetic circuit. The speaker comprises mobile equipment that is movable relative to the magnetic circuit. The spool holder is mounted movably through air gaps and a guide element of the mobile equipment is arranged between the mobile equipment and a frame, on the side of a membrane relative to the magnetic circuit. The mobile equipment passes all the way through the magnetic circuit through end air gaps. The speaker includes a complementary guide element, arranged between the mobile equipment and the frame, on the side opposite the membrane relative to the magnetic circuit.

IPC Classes  ?

• H04R 9/02 - Transducers of moving-coil, moving-strip, or moving-wire type Details
• H04R 9/04 - Construction, mounting, or centering of coil
• H04R 9/06 - Loudspeakers

Goods & Services

(1) Appareils pour l'enregistrement, la transmission, la reproduction, l'amplification ou le traitement du son ou des images; haut-parleurs; enceintes; amplificateurs de son; ordinateurs; smartphones; tablettes électroniques; écouteurs; écouteurs intra-auriculaires; casques audio; appareils de radio; tables de mixage; processeurs de données sonores; convertisseurs de données sonores; barres de son; appareils électro-acoustiques; microphones; projecteurs de home cinéma; systèmes et équipements audio de home cinéma; autoradios; disques acoustiques ou optiques; lecteurs de disques compacts; lecteurs de DVD; chaînes haute-fidélité; téléviseurs; vidéoprojecteurs; stations de connexion pour les lecteurs numériques; télécommandes pour enceintes acoustiques; enceintes connectées; enceintes acoustiques portables; télécommandes pour chaînes stéréo; télécommandes pour téléviseurs; télécommandes pour appareils de radio; supports pour enceintes acoustiques; stations d'accueil portables avec enceintes; supports pour amplificateurs; supports pour téléviseurs; cartes son; cartes mères; appareils et logiciels pour l'amélioration du son analogique et numérique destinés au traitement, à l'enregistrement, à la reproduction, à la diffusion en continu, à la transmission et à la réception de signaux électroniques ou numériques.

Goods & Services

Apparatus for recording, transmitting, reproducing, amplifying or processing sound or images; Loudspeaker systems; Loudspeakers; Audio amplifiers; Computers; Smartphones; Tablet computers; Headsets; In-ear headphones; Audio headphones; Radios; Mixing consoles; Sound data processors; Sound data converters; Soundbars; Electroacoustic apparatus; Microphones; Home theater projectors; Audio systems and equipment for home cinema; Car radios; Acoustic and optical discs; Compact disc players; DVD drives; Hi-fi systems; Television apparatus; Video projectors; Docking stations for digital players; Remote controls for public address speaker systems; Smart speakers; Portable speakers; Remote controls for stereos; Remote controls for televisions; Remote controls for radios; Stands for loudspeaker enclosures; Portable speaker docks; Racks for amplifiers; Stands for televisions; Sound cards; System boards (mother cards); Analog and digital sound enhancing apparatus and software for use in connection with the processing, recording, reproduction, streaming, transmission, and reception of electronic or digital signals.

Goods & Services

Apparatus for recording, transmission, reproduction, or processing of sound or images; apparatus for amplification of sound; loudspeakers; speakers being loudspeakers; sound amplifiers; computers; smartphones; tablet computers; earphones; in-ear headphones; audio headphones; radios; audio mixers; sound data processors; sound data converters, namely, analog to digital converters and digital to analog converters; sound bars; electro-acoustic apparatus, namely, active and passive loudspeakers; microphones; home theater video projectors; home-theater audio equipment systems comprised of power amplifiers, loudspeakers, audio mixers; car radios; blank optical disks; compact disk players; DVD players; high-fidelity sound systems comprised of loudspeakers, audio mixers, power amplifiers; television sets; video projectors; connection stations for digital players, namely, digital media hubs; remote controls for loudspeaker cabinets; wirelessly connected speakers, namely, wireless speakers; portable acoustic speakers being audio speakers; remote controls for stereos; remote controls for televisions; remote controls for radios; stands specially adapted for holding loudspeaker cabinets; portable computer docking stations with loudspeakers; holders for amplifiers, namely, amplifier stands; television stands specially adapted to support televisions; sound cards; motherboards; apparatus and recorded software for the improvement of analog and digital sound, namely, apparatus for the processing, recording, reproduction, streaming, transmission and reception of electronic and digital audio signals featuring recorded software for audio processing and manipulation

Abstract

The invention relates to a sound reproduction installation (10) which comprises sound reproduction devices (12, 14), each device comprising: - an internal clock (22); - means (20) for receiving synchronisation time information; - means (30) for receiving an audio stream to be reproduced comprising reproduction time information; and - means (52) for sound reproduction of the audio stream on the basis of the internal clock (22). The means (20) for receiving synchronisation time information are able to receive the TSF signals of a single Wi-Fi network (16) having a single BSSID address for all the devices (12, 14), and each device (12, 14) comprises means (26) for slaving the internal clock (22) to the TSF signal received.

IPC Classes  ?

• H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers
• H04J 3/06 - Synchronising arrangements

Abstract

The headphones (10) comprise: a transducer (16) (12); a noise cancellation filter (34B, 44B) whose transfer function is a noise cancellation transfer function. The secondary path is formed between the transducer (16) and the eardrum, and the transfer function of the processed secondary path is the transfer function of the secondary path combined with the transfer functions of the processing components, excluding the processing filter (34, 44).

IPC Classes  ?

• A61F 11/06 - Protective devices for the ears
• H04R 1/10 - EarpiecesAttachments therefor
• G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effectsMasking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
• G10K 11/16 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general

Goods & Services

Apparatus for recording, transmission, reproduction, amplification or processing of sound or images; loudspeakers; speakers (loudspeakers); sound amplifiers; computers; smartphones; tablet computers; earphones; in-ear headphones; audio headphones; radios; audio mixers; sound data processors; sound data converters; sound bars; electro-acoustic apparatus; microphones; home theater projectors; home-theater audio equipment and systems; car radios; acoustic or optical disks; compact disk players; DVD players; high-fidelity sound systems; television sets; video projectors; connection stations for digital players; remote controls for loudspeaker cabinets; remote controls for stereos; remote controls for televisions; remote controls for radios; stands for loudspeaker cabinets; holders for amplifiers; television supporting stand; sound cards; motherboards; apparatus and software for the improvement of analog and digital sound for the processing, recording, reproduction, streaming, transmission and reception of electronic or digital signals.

Goods & Services

Apparatus for sound recording, transmission, reproduction, amplification or processing; cabinets for loudspeakers; audio amplifiers; loudspeakers; acoustic speakers; speakers being audio equipment; smart acoustic speakers; acoustic speakers with adjustable orientation and inclination; high-fidelity audio apparatus; car radios; earphones; personal headphones for sound transmitting apparatus; sound bars; subwoofers; loudspeaker orientation, tilting and automated readjustment devices (as loudspeaker components); adjustable mechanical supports for acoustic speakers; audio mixers being audio apparatus; equalizers being audio apparatus; sound data processors and converters; audio compressors; audio timers; audio noise reducers; audio-frequency reducers, amplifiers and adapters; microphones being component parts of apparatus for sound recording, transmission, reproduction, amplification or processing; sound sensors; sound cards; audio circuit boards; vibration dampers for audio equipment; software (recorded programs) for automated adapting of the direction and inclination of loudspeakers according to the positioning of the audio device incorporating the loudspeakers; software (recorded programs) for sound transmission, reception, processing, encoding, decoding, recording, amplification, reduction, adapting, synchronization and reproduction.

Goods & Services

Loudspeakers; cabinets for loudspeakers; sound amplifiers; computers; tablet computers; earphones; in-ear headphones; audio headphones; radios; audio mixers; sound data processors; sound data converters being data processing equipment; sound bars; electro-acoustic apparatus, namely, electroacoustic transducers; microphones; home theater movie projectors; home-theater audio equipment and systems comprising of DVD players, audio amplifiers, audio speakers; car radios; blank acoustic or optical disks; compact disk players; DVD players; high-fidelity surround sound systems; television sets; video projectors; connection stations for digital players being electronic docking stations; remote controls for loudspeaker cabinets; remote controls for stereos; remote controls for televisions; remote controls for radios; stands specially adapted for holding loudspeaker cabinets; holders specially adapted for amplifiers; television supporting stand; sound cards; motherboards; computer hardware and downloadable software for the improvement of analog and digital sound for the processing, recording, reproduction, streaming, transmission and reception of electronic or digital signals

Abstract

Infinite acoustic baffle (10) comprising a box (12) and a loudspeaker (20) comprising a membrane (22) that is movable relative to the box (12), the box (12) and the membrane (22) defining a substantially closed baffle chamber (14); the loudspeaker (20) comprising an electrically controlled motor (30) for actuating the membrane (22) that is able to move relative to the box (12), the baffle also comprising a mechanism (50) for axially urging the membrane (22) away from its median rest position counter to the pressure force exerted on the membrane (22) by the gas contained in the box (12) characterized in that the mechanism (50) comprises a cam (54) that is movable relative to the box (12) along an axis (X-X) for displacing of the cam under the displacement action of the membrane (22) and at least one cam follower (58A, 58B) that is biased transversely to the cam (54) by at least one spring (60A, 60B) and bears on the cam (54), the cam (54) having at least one cam surface (56A, 56B) capable of converting the transverse force of the or each spring (60A, 60B) into an axial force on the cam (54), the intensity of which varies depending on the position of the cam (54) relative to the box (12).

IPC Classes  ?

• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
• H04R 7/18 - Mounting or tensioning of diaphragms or cones at the periphery
• H04R 9/06 - Loudspeakers
• H04R 11/02 - Loudspeakers
• H04R 7/26 - Damping by means acting directly on free portion of diaphragm or cone
• H04R 1/02 - CasingsCabinetsMountings therein
• H04R 1/42 - Combinations of transducers with fluid-pressure or other non-electrical amplifying means

Goods & Services

Apparatus for recording, transmitting, reproducing, amplifying or processing sound or images; Loudspeaker systems; Loudspeakers; Audio amplifiers; Computers; Smartphones; tablets; Headsets; In-ear headphones; Audio headphones; Radios; Mixing consoles; Sound data processors; Sound data converters; Soundbars; Electroacoustic apparatus; Microphones; Home theater projectors; Audio systems and equipment for home cinema; Car radios; Acoustic and optical discs; Compact disc players; DVD drives; Hi-fi systems; Television apparatus; Video projectors; Docking stations for digital players; Remote controls for public address speaker systems; Remote controls for stereos; Remote controls for televisions; Remote controls for radios; Stands for loudspeaker enclosures; Racks for amplifiers; Stands for televisions; Sound cards; Motherboards; Analog and digital sound enhancing apparatus and software for use in connection with the processing, recording, reproduction, streaming, transmission, and reception of electronic or digital signals.

Goods & Services

Apparatus for recording, transmission and reproduction of sound, Apparatus for amplifying sound, Audio processing apparatus; Public address speaker systems; Smart speakers; Audio amplifiers; Electroacoustic amplifiers; Stereo amplifying apparatus; Loudspeaker systems; Smart speakers; Loudspeakers with built in amplifiers; High fidelity audio apparatus; Car radios; Headsets; Personal headphones for sound transmitting apparatuses; Subwoofers; Audio mixers being audio apparatus; Equalisers being audio apparatus; Sound data processors and converters; Audio compressors; Audio time delay units; Audio noise reducers; Audio frequency adapters, amplifiers and reducers; Sonic sensors; Sound cards; Audio circuit boards; damping vibration apparatus for audio equipment; Computer software, recorded, for the transmission, reception, processing, coding, decoding, recording, amplification, reducing, adaptation, synchronisation, and reproduction of sound; Computer software, recorded, for the processing and adjustment of sound signals in real time for the purpose of optimising sound reproduction performance; excluding microphones modules and microphones for communication devices.

Abstract

An acoustic system (1) for diffusing sound from N channels (Si) comprising audio frequencies, N being greater than or equal to two, the acoustic system comprising a frame (5), M loudspeakers (HPj) which are similar to each other and mounted on the frame (5), and a processing unit (20) designed to send M loudspeaker signals (SSj) to the loudspeakers respectively. The loudspeakers are arranged at an angle about an axis (Z), two successive loudspeakers forming an angle (a) substantially equal to 360° divided by M. j,MF) in addition to the shared bass component and in which the audio frequencies below the first frequency are non-existent or reduced, each specific component being obtained from at least one of the channels, and at least two of the specific components being different from each other.

IPC Classes  ?

• H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers

Abstract

The audio processing system comprises: - a digital input for a digital audio signal to be processed, encoded over a reduced number of bits fewer than 6, - a processing unit receiving, as input, the digital audio signal to be processed, and - a digital output for a processed digital audio signal. The processing unit comprises: - at least two elementary processing modules with input encoded over the reduced number of bits (32A,... 32N), each elementary module (32A,... 32N) comprising an array (34) of arithmetic operators and, at the output of the network (34), an elementary ΣΔ modulator (36) truncating the encoding to fewer than 6 bits; - a communication network (75), to which the digital input, the digital output and the elementary modules (32A,... 32N) are connected; and - at least one multi-bit link (77) with encoding over a high number of bits higher than the reduced number of bits, connecting at least two arrays (34) of arithmetic operators.

IPC Classes  ?

• H03M 3/00 - Conversion of analogue values to or from differential modulation
• G10K 11/175 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effectsMasking sound

Goods & Services

Apparatus for recording, transmission, reproduction, amplification or processing of sound or images; loudspeakers; cabinets for loudspeakers; sound amplifiers; computers; smartphones; tablets; earphones; in-ear headphones; audio headphones; radios; audio mixers; sound data processors; sound data converters; sound bars; electro-acoustic apparatus; microphones; home theater projectors; home-theater audio equipment and systems; car radios; acoustic or optical disks; compact disk players; DVD players; high-fidelity sound systems; television sets; video projectors; connection stations for digital players; remote controls for loudspeaker cabinets; remote controls for stereos; remote controls for televisions; remote controls for radios; stands for loudspeaker cabinets; holders for amplifiers; television supporting stand; sound cards; motherboards; apparatus and software for the improvement of analog and digital sound for the processing, recording, reproduction, streaming, transmission and reception of electronic or digital signals.

Goods & Services

Apparatus for recording, transmitting, reproducing, amplifying or processing sound or images; Loudspeaker systems; Loudspeakers; Audio amplifiers; Computers; Smartphones; tablets; Headsets; In-ear headphones; Audio headphones; Radios; Mixing consoles; Sound data processors; Sound data converters; Soundbars; Electroacoustic apparatus; Microphones; Home theater projectors; Audio systems and equipment for home cinema; Car radios; Acoustic and optical discs; Compact disc players; DVD drives; Hi-fi systems; Television apparatus; Video projectors; Docking stations for digital players; Remote controls for public address speaker systems; Remote controls for stereos; Remote controls for televisions; Remote controls for radios; Stands for loudspeaker enclosures; Racks for amplifiers; Stands for televisions; Sound cards; System boards (mother cards); Analog and digital sound enhancing apparatus and software for use in connection with the processing, recording, reproduction, streaming, transmission, and reception of electronic or digital signals; none of the aforementioned goods being digital trading cards.

Abstract

tt(p)(p)t(p)t(tol)(p)(c)mmt(c)mm.

IPC Classes  ?

• H04N 21/43 - Processing of content or additional data, e.g. demultiplexing additional data from a digital video streamElementary client operations, e.g. monitoring of home network or synchronizing decoder's clockClient middleware
• H04N 21/81 - Monomedia components thereof
• H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers
• H03K 21/40 - MonitoringError detectionPreventing or correcting improper counter operation

Goods & Services

Earphones; personal headphones for sound transmitting apparatus; apparatus for sound recording, transmission, reproduction, amplification or processing; loudspeaker cabinets; amplifiers; loudspeakers; subwoofers; software for sound transmission, processing, recording, amplification and reproduction; electric and electronic effect devices for musical instruments; audio interfaces [software]; audio mixers being audio apparatus; audio equalizer apparatus; sound data processors and converters; microphones; sound cards; apparatus and software for analog and digital sound enhancement for processing, recording, reproduction, streaming, transmission and reception of electronic or digital sound signals; computer programs, software (recorded programs), computer hardware and computer components and other digital devices used to create, process, measure, analyze, record, amplify, improve, reproduce, transmit, control, test, receive and play audio and sound files; computer programs and software for encoding and decoding voice and audio signals.

Abstract

greater than or equal to 97% of the external diameter, the first diameter being greater than 40% of the external diameter.

IPC Classes  ?

• H04R 9/06 - Loudspeakers
• H04R 7/02 - Diaphragms for electromechanical transducersCones characterised by the construction
• H04R 9/02 - Transducers of moving-coil, moving-strip, or moving-wire type Details
• H04R 9/04 - Construction, mounting, or centering of coil

Goods & Services

Apparatus for recording, transmitting, reproducing, amplifying or processing sound or images; Loudspeaker systems; Loudspeakers; Audio amplifiers; Computers; Smartphones; tablets; Headsets; In-ear headphones; Audio headphones; Radios; Mixing consoles; Sound data processors; Sound data converters; Soundbars; Electroacoustic apparatus; Microphones; Home theater projectors; Audio systems and equipment for home cinema; Car radios; Acoustic and optical discs; Compact disc players; DVD drives; Hi-fi systems; Television apparatus; Video projectors; Docking stations for digital players; Remote controls for public address speaker systems; Remote controls for stereos; Remote controls for televisions; Remote controls for radios; Stands for loudspeaker enclosures; Racks for amplifiers; Stands for televisions; Sound cards; System boards (mother cards); Analog and digital sound enhancing apparatus and software for use in connection with the processing, recording, reproduction, streaming, transmission, and reception of electronic or digital signals.

Goods & Services

Earphones; personal headphones for sound transmitting apparatus; apparatus for sound recording, transmission, reproduction, amplification or processing; loudspeaker cabinets; amplifiers; loudspeakers; microphones; sound cards; analog and digital sound enhancement apparatus for processing, recording, reproduction, streaming, transmission and reception of electronic or digital sound signals.

Goods & Services

Headsets, personal headsets for sound transmitting apparatus, apparatus for recording, transmitting or reproducing, amplifying or processing sound, loudspeakers, amplifiers, loudspeakers, subwoofers, electric and electronic effects units for musical instruments, audio mixers being audio apparatus, equalizers [audio apparatus], sound data processors and converters, microphones, sound cards, apparatus for improving analogue and digital sound for use in processing, recording, reproducing, streaming, transmitting and receiving electronic or digital audio signals, computer hardware and computer components and other digital devices for use in creating, preserving, measuring, analyzing, recording, amplifying, improving, reproducing, transmitting, controlling, testing, receiving and playing audio and sound files, all the aforesaid goods being equipped with physical sensors, sound sensors, recording and/or transmission apparatus dedicated to active sound reduction technology; distributed processing software, for recording, amplifying and reproducing sound, audio interfaces (software), software for analog and digital sound enhancement for processing, recording, reproducing, streaming, transmitting and receiving electronic or digital audio signals, software, recorded software for use in creating, preserving, measuring, analyzing, recording, amplifying, improving, reproducing, transmitting, controlling, testing, receiving and playing audio and sound files, computer programs and software for encoding and decoding voice and audio signals, all the aforesaid goods for use in physical sensors, sound sensors, recording and/or transmission apparatus dedicated to active sound reduction technology.

Goods & Services

Earphones; personal headphones for sound transmitting apparatus; apparatus for sound recording, transmission, reproduction, amplification or processing; loudspeaker cabinets; amplifiers; loudspeakers; subwoofers; software for sound transmission, processing, recording, amplification and reproduction; electric and electronic effect devices for musical instruments; audio interfaces [software]; audio mixers being audio apparatus; audio equalizer apparatus; sound data processors and converters; microphones; sound cards; apparatus and software for analog and digital sound enhancement for processing, recording, reproduction, streaming, transmission and reception of electronic or digital sound signals; computer programs, software (recorded programs), computer hardware and computer components and other digital devices used to create, process, measure, analyze, record, amplify, improve, reproduce, transmit, control, test, receive and play audio and sound files; computer programs and software for encoding and decoding voice and audio signals.

Goods & Services

Headsets; Personal headphones for sound transmitting apparatuses; Apparatus, in the following fields: Recordal, Transmission, reproduction, Amplification, Processing of sounds; Loudspeakers; Amplifiers; Loudspeaker systems; Microphones; Sound cards; Apparatus, For the enhancement of analogue and digital sound, in the following fields: Treating, Recordal, reproduction, Streaming, Transmission, Reception, Electronic or digital sound signals.

Goods & Services

Earphones; personal headphones for sound transmitting apparatus; apparatus for sound recording, transmission, reproduction, amplification or processing; loudspeaker cabinets; amplifiers; loudspeakers; subwoofers; downloadable software for sound transmission, processing, recording, amplification and reproduction; electric and electronic effect audio mixers for musical instruments; downloadable software for operating audio interfaces; audio mixers being audio apparatus; audio equalizer apparatus; sound data processors and frequency converters; microphones; sound cards; apparatus and downloadable software for analog and digital sound enhancement for processing, recording, reproduction, streaming, transmission and reception of electronic or digital sound signals; downloadable computer programs, recorded software, computer hardware and computer components and other digital sound processors used to create, process, measure, analyze, record, amplify, improve, reproduce, transmit, control, test, receive and play audio and sound files; downloadable computer programs and software for encoding and decoding voice and audio signals

Goods & Services

Headsets in the nature of headphones, personal headsets in the nature of headphones for sound transmitting apparatus, apparatus for recording, transmitting or reproducing, amplifying or processing sound, loudspeakers, amplifiers, subwoofers, electric and electronic effects units for musical instruments, audio mixers being audio apparatus, equalizers being audio apparatus, sound data processors and frequency converters, microphones, sound cards, apparatus for improving analogue and digital sound for use in processing, recording, reproducing, streaming, transmitting and receiving electronic or digital audio signals, computer hardware and computer components and other digital sound processors for use in creating, preserving, measuring, analyzing, recording, amplifying, improving, reproducing, transmitting, controlling, testing, receiving and playing audio and sound files, all the aforesaid goods being equipped with physical sensors, sound sensors, recording and/or transmission apparatus dedicated to active sound reduction technology; downloadable distributed processing software for recording, amplifying and reproducing sound, downloadable software for operating audio interfaces, downloadable software for analog and digital sound enhancement for processing, recording, reproducing, streaming, transmitting and receiving electronic or digital audio signals, downloadable software and recorded software for use in creating, preserving, measuring, analyzing, recording, amplifying, improving, reproducing, transmitting, controlling, testing, receiving and playing audio and sound files, and downloadable computer programs and software for encoding and decoding voice and audio signals, all the aforesaid goods for use in physical sensors, sound sensors, recording and/or transmission apparatus dedicated to active sound reduction technology

Goods & Services

Earphones; personal headphones for sound transmitting apparatus; apparatus for sound recording, transmission, reproduction, amplification or processing; loudspeaker cabinets; amplifiers; loudspeakers; subwoofers; downloadable software for sound transmission, processing, recording, amplification and reproduction; electric and electronic effect audio mixers for musical instruments; downloadable software for operating audio interfaces; audio mixers being audio apparatus; audio equalizer apparatus; sound data processors and frequency converters; microphones; sound cards; apparatus and downloadable software for analog and digital sound enhancement for processing, recording, reproduction, streaming, transmission and reception of electronic or digital sound signals; downloadable computer programs, recorded software, computer hardware and computer components and other digital sound processors used to create, process, measure, analyze, record, amplify, improve, reproduce, transmit, control, test, receive and play audio and sound files; downloadable computer programs and software for encoding and decoding voice and audio signals

Abstract

A speaker including a supporting structure, a diffusion membrane that is movable relative to the supporting structure, a motor for actuating the diffusion membrane, including a movable unit relative to the supporting structure, the movable unit being mechanically connected to the diffusion membrane for synchronized movement thereof, and a hydraulic circuit interposed between the movable unit and the diffusion membrane, the diffusion membrane and the movable unit each including a movable piston surface, interacting with a fluid of the hydraulic circuit.

IPC Classes  ?

• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
• H04R 9/06 - Loudspeakers

Goods & Services

Earphones.

Goods & Services

Headsets, Personal headphones for sound transmitting apparatuses, Apparatus for recording, transmission or reproduction, The amplification or processing of sound, Loudspeakers, Amplifiers, Loudspeaker systems, Subwoofers, Electric and electronic effects units for musical instruments, Audio mixers being audio apparatus, Equalisers being audio apparatus, Sound data processors and converters, Microphones, Sound cards, Analogue and digital sound enhancing apparatus for use in processing, recording, reproducing, streaming, transmitting and receiving of electronic or digital audio signals, Computer hardware and Computer components and Other digital devices for use in creating, Curation, Measuring, analysing, recording, Amplify, Enhance, reproducing, transmitting, controlling, Testing, receiving and reading audio files and sounds, all the aforesaid goods being equipped with physical sensors, sound sensors, recording and /or transmission apparatus dedicated to active sound reduction technology; Distributed processing software, for recording, Amplification and reproduction of sound, Аudio interfaces [software], Analogue and digital sound enhancing software for use in processing, recording, reproducing, streaming, transmitting and receiving of electronic or digital audio signals, Software, Computer software (recorded) for use in creating, Curation, Measuring, analysing, recording, Amplify, Enhance, reproducing, transmitting, controlling, Testing, receiving and reading audio files and sounds, computer programs and computer software for encoding and decoding of voice and audio signals, all the aforesaid goods being destined for use in relation to physical sensors, sound sensors, recording and /or transmission apparatus dedicated to active sound reduction technology. Design, The installation, Updating, maintenance and Rental of software for transmitting, processing, recording, amplifying and reproducing sound; Technological research in the field of sound; Research and Development of new products for others in the field of sound; Rental of technological equipment in the field of sound.

Goods & Services

Headsets; Personal headphones for sound transmitting apparatuses; Apparatus for recording, transmission or reproduction, The amplification or processing of sound; Loudspeakers; Amplifiers; Loudspeaker systems; Subwoofers; Computer software for the transmission, processing, recording, amplification and reproduction of sound; Electric and electronic effects units for musical instruments; Аudio interfaces [software]; Audio mixers being audio apparatus; Equalisers being audio apparatus; Sound data processors and converters; Microphones; Sound cards; Analogue and digital sound enhancing apparatus and software for use in processing, recording, reproducing, streaming, transmitting and receiving of electronic or digital audio signals; Software, Computer software, recorded, Computer hardware and Computer components and Other digital devices for use in creating, Curation, Measuring, analysing, recording, Amplify, Enhance, reproducing, transmitting, controlling, Testing, receiving and reading audio files and sounds; computer programs and computer software for encoding and decoding of voice and audio signals. Design, The installation, Updating, maintenance and Rental of software for transmitting, processing, recording, amplifying and reproducing sound; Technological research in the field of sound; Research and Development of new products for others in the field of sound; Rental of technological equipment in the field of sound.

Goods & Services

Headsets; Personal headphones for sound transmitting apparatuses; Apparatus for recording, transmission or reproduction, The amplification or processing of sound; Loudspeakers; Amplifiers; Loudspeaker systems; Subwoofers; Computer software for the transmission, processing, recording, amplification and reproduction of sound; Electric and electronic effects units for musical instruments; Аudio interfaces [software]; Audio mixers being audio apparatus; Equalisers being audio apparatus; Sound data processors and converters; Microphones; Sound cards; Analogue and digital sound enhancing apparatus and software for use in processing, recording, reproducing, streaming, transmitting and receiving of electronic or digital audio signals; Computer programs, computer software, recorded, computer hardware and components of computers and other digital devices used for generating, processing, measuring, analysing, recording, amplifying, enhancing, reproducing, transmitting, controlling, testing, receiving and playing audio files and sounds; computer programs and computer software for encoding and decoding of voice and audio signals. Design, The installation, Updating, maintenance and Rental of software for transmitting, processing, recording, amplifying and reproducing sound; Technological research in the field of sound; Research and Development of new products for others in the field of sound; Rental of technological equipment in the field of sound.

Abstract

Infinite acoustic baffle (10) having a box (12) and a loudspeaker (20) having a membrane (22) that is able to move with respect to the box (12), the box (12) and the membrane (22) delimiting a substantially closed baffle chamber (14); the loudspeaker (20) having an electrically controlled motor (30) for actuating the membrane (22) that is able to move with respect to the box (12), the baffle also having a mechanism (50) for axially urging the membrane (22) away from its median rest position counter to the pressure force exerted on the membrane (22) by the gas contained in the box (12), characterized in that the mechanism (50) has a cam (54) that is movable relative to the box (12) along an axis (X-X) for displacing the cam under the displacement action of the membrane (22), and at least one cam follower (58A, 58B) that is biased transversely to the cam (54) by at least one spring (60A, 60B) and bears on the cam (54), the cam (54) having at least one cam surface (56A, 56B) capable of converting the transverse force of the or each spring (60A, 60B) into an axial force on the cam (54), the intensity of which varies depending on the position of the cam (54) with respect to the box (12).

IPC Classes  ?

• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means

Goods & Services

Headsets.

Abstract

NNMMMLFjMFMF) in addition to the shared bass component. In said specific component, audio frequencies lower than the first frequency are non-existent or reduced, each specific component being obtained from at least one of the channels, and at least two of the specific components being different from each other.

IPC Classes  ?

• H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers
• H04S 1/00 - Two-channel systems
• H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers

Abstract

at these two loudspeakers (13A, 13B) arranged head to tail along a transverse axis (T), the two loudspeakers respectively extending through the two openings. The shell is in one piece, and the shell and an outer part (19) of the armature are suitable for nesting in one another along a longitudinal axis (L), the outer part and the shell at least partially defining an inner volume (23) of the acoustic speaker.

IPC Classes  ?

• H04R 11/02 - Loudspeakers
• H04R 1/02 - CasingsCabinetsMountings therein

Abstract

commande) of the loudspeaker.

IPC Classes  ?

• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
• H04R 9/06 - Loudspeakers

Abstract

at these two loudspeakers (9A, 9B) arranged back-to-back along a transverse axis (T), the two loudspeakers respectively extending through the two openings. The frame comprises an inner part (21) located transversely between the two loudspeakers and on which the two loudspeakers are fastened.

IPC Classes  ?

• H04R 1/02 - CasingsCabinetsMountings therein

Abstract

a truss (20) connecting the convex membrane (18) and the moving part (16). The truss (20) comprises an inner ring (46) and an outer ring (48) that are coaxial, connected to one another by radial pillars (50) and a crown (52) for fastening to one end (53) of the moving part (16), the convex membrane (18) being fastened bearing on the inner and outer rings (46, 48).

IPC Classes  ?

• H04R 9/04 - Construction, mounting, or centering of coil
• H04R 9/06 - Loudspeakers
• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
• H04R 7/20 - Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Abstract

The class-A output stage (8) comprises, between two supply rails (14, 15): - an amplification stage (16) comprising two MOS power transistors (17, 18) of the same polarities connected together in series between a first supply voltage (15) and a reference voltage (14) in order to form, at their midpoint, an output (12) of the output stage; - an input stage (22) comprising an input (10) for the class-A output stage, in which the output of the input stage (22) is applied to the gates of the MOS power transistors (17, 18); - for each MOS power transistor (17, 18), a translinear loop circuit (50, 52), comprising a translinear loop bias circuit (60, 62) comprising a main translinear bias transistor (72, 74) and a secondary bias transistor (76, 78) of different polarities, connected in parallel between a second supply voltage (54) and the reference voltage (16) across two current sources (64, 66, 68, 70), the source of the main translinear transistor (72, 74) and the drain of the secondary translinear transistor (76, 78) of each translinear loop bias circuit (60, 62) being connected to the gate of a corresponding power transistor (17, 18); and - two separate reference voltage generators (92, 94) each connected to the gate of the main translinear transistor (72, 74) of a translinear loop circuit (50, 52) so as to set the quiescent current of the power transistors (17, 18).

IPC Classes  ?

• H03F 3/183 - Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
• H03F 3/30 - Single-ended push-pull amplifiersPhase-splitters therefor
• H03F 1/02 - Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation

Abstract

an inductive element (24) able to smooth the switched signal to obtain a smoothed signal (I1, I3), the smoothed signal (I1, I3) having a useful component and a stray component. The amplification device (10) further comprises a compensation circuit (16), for each amplification stage (12, 14), able to generate a compensation signal (I2, I4) of the stray component of the smoothed signal (I1, I3) generated in the inductive element (24) of the corresponding amplification stage (12, 14).

IPC Classes  ?

• H03F 1/08 - Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
• H03F 3/185 - Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
• H03F 3/30 - Single-ended push-pull amplifiersPhase-splitters therefor
• H03F 1/14 - Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means
• H03F 1/30 - Modifications of amplifiers to reduce influence of variations of temperature or supply voltage
• H03F 3/21 - Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
• H03F 3/45 - Differential amplifiers
• H04R 3/00 - Circuits for transducers

Goods & Services

Apparatus for recording, transmission, reproduction or processing of sound; cabinets for loudspeakers, amplifiers, radios, compact disc players, DVD players and high-density optical discs, high-fi systems, loudspeakers, connection stations for digital players, smartphones, tablets, computers, home cinema systems; car radios.

Abstract

The invention relates to an electrodynamic loudspeaker having: - a frame (17), - an assembly (23) that is movable in translation with respect to the frame along an axis (D) of the loudspeaker about an equilibrium position that is taken up when the loudspeaker is at rest, the assembly having at least one diaphragm (29) configured to emit sound waves, and - at least one suspension joint (25) for the assembly. The joint forms a loop around the assembly and comprises: - a first end (39A) secured to the assembly, - a second end (41A) secured to the frame, and - a main part (43) that connects the first end and the second end and ensures axial flexibility of the joint. The first end or the second end comprises a distal part with respect to the main part, and a proximal part, the distal part being more radially compressible than the proximal part, and being compressed radially between the proximal part and an end stop of the assembly or of the frame.

IPC Classes  ?

• H04R 7/20 - Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
• H04R 31/00 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor

Abstract

Electrodynamic loudspeaker including: - a chassis; - a magnetic circuit defining at least one air gap; - an assembly that is movable with respect to the chassis in translation along an axis (D) of the loudspeaker, the assembly including at least one diaphragm configured to emit sound waves, a coil holder (37) attached to the diaphragm, and at least one coil (39) attached to the coil holder and located in the air gap; and - a power supply system (29) configured to supply electrical power to the coil, the power supply system including at least two electrically conductive wires (49, 51), each of the wires comprising a first end (59) that is connected to the coil (39) and a second end (61) that is mechanically rigidly connected to the magnetic circuit. Each of the two wires comprises at least one portion (63) that is located radially between the axis (D) and the coil, and axially between the magnetic circuit and the diaphragm.

IPC Classes  ?

• H04R 1/06 - Arranging circuit leadsRelieving strain on circuit leads
• H04R 9/06 - Loudspeakers

Abstract

An electrodynamic loudspeaker (5) comprising: - a frame (3), - an assembly moving in translation with respect to the frame (3) along an axis (D) of the loudspeaker (5) about an equilibrium position that is occupied when the loudspeaker is at rest, the assembly comprising at least one membrane (25) configured to emit sound waves, and a connection member (31) attached on the membrane and extending from the membrane to the inside of the loudspeaker, and - a first seal (21) for suspending the assembly, connecting the assembly and the frame, the first seal having a cross-section projecting towards the inside of the loudspeaker. The loudspeaker further comprises a second seal (23) for suspending the assembly, connecting the connection member and the frame, the second seal being situated axially with respect to the first seal on the inside of the loudspeaker, the second seal being radially outside the connection member, the assembly, first seal, second seal and frame defining an intermediate cavity (37) filled with air and with restricted air leak.

IPC Classes  ?

• H04R 7/20 - Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Abstract

The invention relates to an acoustic chamber having: - a box structure (3) forming a first edge (24) defining an opening (26), - at least one loudspeaker having at least one diaphragm (50) that is configured to emit sound waves and extends through the opening, the diaphragm being movable in translation with respect to the box structure along an axis (D) of the loudspeaker about an equilibrium position that is taken up when the loudspeaker is at rest, the diaphragm being configured to oscillated in normal operation between a maximum outward position and a maximum inward position that define between one another a maximum axial displacement (E) of the diaphragm, the diaphragm defining a second peripheral edge (64) situated radially opposite the first edge at least in the rest position, the first edge and the second edge being separated radially by a distance (J), the first edge and the second edge having a first thickness (E1) and a second thickness (E2), respectively, along the axis (D), the first thickness and the second thickness defining a sum (E1+E2). The sum (E1+E2) divided by the maximum axial displacement (E) is less than 1/5th, preferably less than 1/8th, and even more preferably less than 1/12th.

IPC Classes  ?

• H04R 1/02 - CasingsCabinetsMountings therein
• H04R 7/18 - Mounting or tensioning of diaphragms or cones at the periphery
• H04R 9/04 - Construction, mounting, or centering of coil

Abstract

The invention relates to an assembly consisting of a motor vehicle and at least one sound reproduction system, comprising: at least one enclosure (22A) comprising at least one sound diffusion loudspeaker (28) that can emit sound waves; and at least one tubular sound diffusion line (23) comprising a wall (30) defining an internal conduit (31) for propagation of the sound waves emitted, the conduit (31) leading to a first end (32) of the sound diffusion line (23) to which the sound diffusion loudspeaker (28) is connected. The sound diffusion line (23) comprises at least three diffusion points (36) arranged throughout the wall (30), which are substantially aligned along the sound diffusion line (23), each diffusion point (36) being suitable for redirecting a portion of the sound waves propagated in the conduit (31) in order to respectively form a diffused sound wave.

IPC Classes  ?

• H04R 1/34 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means

Goods & Services

Loudspeaker cabinets; amplifiers, loudspeakers, smart phones, tablets, computers; software; interfaces [software]; apparatus for recording, transmission, reproduction or processing of sound or images; radio apparatus, sound mixers, sound data processors and converters, electro-acoustic equipment, microphones, home theater projectors, home theater systems, car radios, smart phones, tablets, computers; telecommunication apparatus, magnetic recording media, digital recording media, acoustic or optical discs; CD drives, DVD drives, high-fidelity sound systems, televisions, video projectors; connection stations for digital players; audio and video equipment (apparatus), apparatus, components and accessories (namely microprocessors and electronic power supply) used for the production, processing, measuring, analyzing, recording, amplification, improvement, production, reproduction, transmission, storage, checking, testing, receiving and playing of audio signals, files and sounds and visual signals, files and images; sound cards; motherboard; apparatus and software for the improvement of analog and digital sound for the processing, recording, reproduction, streaming, transmission and reception of electronic or digital signals; computer programs, software (recorded programs), computer hardware and computer components and other digital devices for use in creating, processing, measuring, analyzing, recording, amplifying, enhancing, reproducing, transmitting, controlling, testing, receiving and reading signals, audio files and sounds, and signals, visual files and images; computer programs and software for encoding and decoding voice and audio signals; computer hardware and software for the processing, recording, reproduction, distribution, streaming, transmission and reception of electronic or digital signals; multi-channel sound processors, video processors and sound processors; equipment (apparatus) for alignment and testing for audio and video equipment for the processing, recording, reproduction, diffusion, streaming, transmission and reception of electronic or digital signals; digital signal processing chips; printed circuit boards; graphics cards; graphic processors; magnetic, optical and digital recording media; remote controls for loudspeaker cabinets, stereos, televisions and radios; stands for loudspeaker cabinets, stands for amplifiers, stands for televisions, stands for portable telephones, stands for photographic apparatus, stands for computer equipment, wall brackets for television screens; routers for routing of audio, video and digital signals; electronic, optical, electric and telephone connectors; downloadable music and image files; downloadable digital music hosted on the Internet; ring tones, graphics and music downloadable via a global computer network and wireless devices; software for processing digital music files; software for creating and editing music and sounds; software for creating and editing music and sounds; amplifiers for musical instruments; compact disks featuring music; audio recordings featuring music; cases for music storage devices, covers for music storage devices, carrying cases for portable music players; electric and electronic effects units for musical instruments; docking stations for digital music players; scientific apparatus and instruments; nautical apparatus and instruments; surveying apparatus and instruments; photographic apparatus and instruments; cinematographic cameras; optical apparatus and instruments; weighing apparatus and instruments; measuring apparatus and instruments; signaling apparatus and instruments; checking (supervision) apparatus and instruments; teaching apparatus and instruments; image recording apparatus; image transmission apparatus; image reproduction apparatus; compact discs (CDs); DVDs; mechanisms for coin-operated apparatus; cash registers; calculating machines; data processing equipment; computers; electronic tablets; smartphones; electronic book readers; game software; computer peripheral devices; detectors; electric wires; electric relays; 3D spectacles; integrated circuit cards [smart cards]; bags designed for laptop computers; smartwatches; electric batteries; diagnostic apparatus not for medical use; phonograph; bags for computers, bags for loudspeaker cabinets; bags adapted for carrying electronic apparatus, video apparatus, photographic apparatus and equipment, cameras; bags and cases for mobile telephones and telephone equipment. Leather; animal skins; trunks and suitcases; umbrellas and parasols; walking sticks; whips; saddlery; wallets; purses (coin purses); credit card cases [wallets]; bags; vanity cases, not fitted; collars for animals; clothing for animals. Furniture; mirrors; picture frames; works of art made of wood, wax, plaster or plastic materials; coat hangers; chests of drawers; cushions; shelves; packaging containers of plastic; armchairs; seats; bedding except linen; mattresses; plate racks; boxes of wood or plastic. Advertising; commercial business management; commercial administration; office functions; dissemination of advertising material (leaflets, prospectuses, printed matter, samples); newspaper subscription services (for others); arranging subscriptions to telecommunication services for others; presentation of goods on all communication media, for retail sale; wholesale and retail sale of audiovisual equipment, computer hardware and sound equipment, computer software, clothing, furniture, games, luggage, bags and pouches; online retail store services featuring downloadable prerecorded music and video files and downloadable ringtones; business management of wholesale and retail sale outlets; management of promotional and incentive sale programs; provision of on-line auction services; organization of the sale of products for third parties; obtaining of contracts on the purchase and sale of goods; administrative processing and organizing of mail order services; business administration services for the processing of sales made on the Internet; business management and organization consultancy; accounting; document reproduction; employment agency services; business management for freelance service providers; computer file management; web site traffic optimization; organization of exhibitions for commercial or advertising purposes; online advertising on a computer network; rental of advertising time on all communication media; publication of advertising texts; rental of advertising space; dissemination of advertisements; public relations; company audits (commercial analyses); commercial intermediation services. Telecommunications; information on telecommunications; communications by computer terminals; communications by fiber-optic networks; radio communications; telephone communications; cellular telephone communication; provision of user access to global computer networks; provision of on-line forums; provision of access to databases; electronic bulletin board services (telecommunication services); connection by telecommunications to a global computer network; press agencies; news (information) agencies; rental of telecommunication apparatus; broadcasting and transmission of radio and television programs; teleconferencing services; videoconferencing services; electronic messaging services; rental of access time to global computer networks. Education; training; entertainment; sporting and cultural activities; entertainment information; information relating to education; vocational retraining; provision of recreational facilities; publication of books; book lending; motion picture production; rental of sound recordings; rental of television sets; rental of show scenery; videotape editing; photography services; organization of competitions (education or entertainment); organization and conducting of colloquiums; organization and conducting of conferences; organization and conducting of congresses; organization of exhibitions for cultural or educational purposes; booking of seats for shows; game services provided on-line from a computer network; gambling services; electronic publication of books and journals online; electronic desktop publishing. Technical evaluations concerning design (engineers' services); scientific research; technical research; design of computers for others; computer development; software design; software development; research and development of new products for others; technical project study services; architecture; design of interior decor; software development (design); software installation; software maintenance; updating of software; software rental; programming for computers; computer system analysis; computer system design; consultancy in the design and development of computers; digitization of documents; software as a service (SaaS); cloud computing; information technology (IT) consultancy; hosting of servers; vehicle roadworthiness testing; graphic arts design services; styling (industrial design); authentication of works of art; energy auditing; electronic data storage.

Goods & Services

Apparatus for recording, transmission, reproduction or processing of sound; Loudspeaker systems, amplifiers, compact disc players, DVD players and high density optical discs, hi-fi systems, speaker apparatus, docking stations for digital players, home cinemas; Car radios.

Abstract

the calculation of an effective date for the rendering of the multimedia stream.

IPC Classes  ?

• H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers
• G11B 27/10 - IndexingAddressingTiming or synchronisingMeasuring tape travel
• H04N 21/43 - Processing of content or additional data, e.g. demultiplexing additional data from a digital video streamElementary client operations, e.g. monitoring of home network or synchronizing decoder's clockClient middleware

Abstract

A method is provided for producing a volume gain applied by an amplifier to at least one audio signal according to a desired volume gain selected by a user, which includes calculating a standardized total slow sound level from at least one audio signal, calculating maximum slow volume gain and minimum slow volume gain as the quotient of the product of the desired volume gain by maximum slow gain, respectively by minimum slow gain, divided by the standardized total slow sound level, determining a first minimum out of the desired volume gain and the maximum slow volume gain, determining a second minimum out of the desired volume gain multiplied by a maximum volume gain and the minimum slow volume gain, determining as a slow volume gain the maximum of the first and second previously determined minima, and calculating the volume gain according to the slow volume gain.

IPC Classes  ?

• H03G 7/00 - Volume compression or expansion in amplifiers
• H04R 3/00 - Circuits for transducers

Goods & Services

(1) Logiciels pour la transmission, la reproduction et le traitement du son, cartes d'interfaces informatiques, appareils pour la transmission, la reproduction et le traitement du son, nommément appareils électroacoustiques, nommément, amplificateur de son, mélangeurs du son, mixeur de son, enregistreurs pour bandes audio, transformateurs audio, transformateur acoustique, amplificateurs de fréquences audio, enregistreurs magnétiques audio, récepteurs audio, processeurs électroniques de signaux audio pour compenser la distorsion du son de haut-parleurs, table de mixage audio, table de mixage audio et video, processeur de traitement numérique des champs sonores, amortisseurs de vibration pour les équipement audio électroniques, processeurs électroniques, microprocesseurs et articles d'alimentations électroniques pour ordinateurs utilisés pour la production, le traitement, la mesure, l'analyse, l'enregistrement, l'amplification, l'amélioration, la production, la reproduction, la transmission, le stockage, le contrôle, les tests, la réception et la lecture de signaux audio, de fichiers musicaux et de sons, Cartes son, Carte mère, Appareils et logiciels pour l'amélioration du son analogique et numérique destinés au traitement, à l'enregistrement, à la reproduction, à la diffusion en continu, à la transmission et à la réception de signaux électroniques et numériques, nommément, amplificateurs de signaux, moniteurs de signalisation numériques, processeurs électroniques de signaux numériques, logiciels pour la transmission de signaux électroniques et numériques, matériel informatique et composants informatiques et autres dispositifs numériques utilisés pour créer, traiter, mesurer, analyser, enregistrer, amplifier, améliorer, reproduire, transmettre, commander, tester, recevoir et lire des signaux, fichiers audio et des sons, nommément, processeur de traitement numérique des champs sonores, processeurs de signaux vocaux numériques, processeurs électroniques de signaux audio pour compenser la distorsion du son de haut-parleurs, processeurs vidéo, circuits imprimés audio, amplificateurs audio, amplificateurs de signaux, microphones, logiciels pour contrôler et améliorer la qualité sonore du matériel audio, logiciels pour la création et l'édition de musique et de son, logiciels de traitement d'images, Processeurs du son multi-canaux, Processeurs de son, Équipements (appareils) d'alignement et de test pour enceintes acoustiques audio, haut-parleurs acoustiques, amplificateurs de fréquences audio et enregistreurs magnétiques audio, destinés au traitement, à l'enregistrement, à la reproduction, à la diffusion, à la diffusion en continu, à la transmission et à la réception de signaux électroniques et numériques nommément, processeurs électroniques de signaux audio pour compenser la distorsion du son de haut-parleurs, programmes de service pour tester et évaluer la qualité du son rendue sur les hauts-parleurs, convertisseur numérique-analogique, convertisseurs de fréquences, Puces de traitement de signaux numériques, Cartes de circuits imprimés, Cartes graphiques, processeurs graphiques, nommément processeurs de signaux numériques accélérateur graphique pour ordinateur, Supports pour amplificateurs, cartes à mémoire, et cartes à microprocesseur. (2) Enceintes acoustiques audio, haut-parleurs, Programmes d'exploitation informatiques, Programmes informatiques et logiciels pour le codage et le décodage de signaux vocaux et audio, Matériel informatique et logiciels destinés au traitement, à l'enregistrement, à la reproduction, à la diffusion, à la diffusion en continu, à la transmission et à la réception de signaux électroniques et numériques, Télécommandes pour enceintes acoustiques, chaines stéréo, téléviseurs et radios, supports pour enceintes acoustiques, Routeurs pour le routage de signaux audio, connecteurs électroniques pour cartes de circuits imprimés, pour enceintes acoustiques, optiques, électriques, Logiciels pour le traitement de fichiers de musique numérique. (3) Amplificateurs de son. (4) Sacs pour enceintes acoustiques, Sacs conçus pour transporter des appareils électroniques. (5) Boîtes en bois et en matières plastiques. (6) Meubles, nommément, étagères, récipients d'emballage en matières plastiques. (1) Services de vente en gros et au détail d'équipements audiovisuels, de matériel informatique et de matériel acoustique, nommément, enceintes acoustiques et disques acoustiques, de logiciels informatiques, meubles, sacs. (2) Mise à disposition de forums en ligne de discussion sur l'internet, fourniture d'accès à des bases de données dans le domaine des signaux audio et des fichiers audio et musicaux. (3) Formation en informatique, formation à distance de niveau collégial, formation dans le domaine des signaux audio, formation dans les domaines de la production, le traitement, la mesure, l'analyse, l'enregistrement, l'amplification, l'amélioration, la production, la reproduction, la transmission, le stockage, le contrôle, les tests, la réception et la lecture de signaux audio, de fichiers musicaux et de sons ; Divertissement consistant en concerts musicaux. (4) Évaluations techniques concernant la conception (travaux d'ingénieurs), nommément, évaluation de nouvelles inventions, recherches scientifiques dans les domaines de la production, le traitement, la mesure, l'analyse, l'enregistrement, l'amplification, l'amélioration, la production, la reproduction, la transmission, le stockage, le contrôle, les tests, la réception et la lecture de signaux audio, de fichiers musicaux et de sons ; recherches techniques dans les domaines de la production, le traitement, la mesure, l'analyse, l'enregistrement, l'amplification, l'amélioration, la production, la reproduction, la transmission, le stockage, le contrôle, les tests, la réception et la lecture de signaux audio, de fichiers musicaux et de sons, conception de logiciels, développement de logiciels, recherche et développement de nouveaux produits pour des tiers, élaboration (conception) de logiciels, maintenance de logiciels, mise à jour de logiciels. (5) Fourniture d'informatique en nuage pour le stockage électronique de données.

Abstract

The present invention relates to an amplifying device (10) for amplifying an input signal, comprising: - a first amplification stage (12), - a second amplification stage (14), each amplification stage (12, 14) comprising: · a switching circuit (22), the switching circuit (22) being capable of generating, as output (22A, 22B), a switched signal having at least two states, and · an inductive element (24) capable of smoothing the switched signal in order to obtain a smoothed signal (I1, I3), the smoothed signal (I1, I3) having a useful component and a parasitic component. The amplifying device (10) further comprises a compensation circuit (16), for each amplification stage (12, 14), capable of generating a compensation signal (I2, I4) for compensating the parasitic component of the smoothed signal (I1, I3) generated in the inductive element (24) of said amplification stage (12, 14).

IPC Classes  ?

• H03F 3/185 - Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
• H03F 3/30 - Single-ended push-pull amplifiersPhase-splitters therefor
• H03F 1/14 - Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements by use of neutralising means

Goods & Services

communications by computer terminals; communications by fiber-optic networks; radio communications; telephone communications; cellular telephone communication; provision of user access to global computer networks; provision of on-line forums for commercial and communication purposes with prospects, clients and sales network; provision of access to databases; electronic bulletin board services; providing connection by telecommunications to a global computer network; press agencies; rental of telecommunication apparatus; broadcasting and transmission of radio and television programs; teleconferencing services; videoconferencing services; electronic messaging services; rental of access time to global computer networks Loudspeaker cabinets; amplifiers; loudspeakers; smart phones; computers; downloadable graphical user interface software and downloadable universal peripheral interface software for mobile devices, electronic tablets and websites; apparatus for recording, transmission, reproduction or processing of sound or images; sound mixers, sound data processors and converters, microphones, home theater projectors, car radios, smart phones, tablets, computers; telecommunication apparatus, namely, modems, wireless routers, wireless communication devices used for speakers and amplifiers, sound speakers with voice recognition, magnetic recording media in the nature of external computer hard drives; digital audio and video recording media, namely, pre-recorded video cassettes, digital video discs, digital versatile discs, downloadable audio and video recordings, featuring music and sound, acoustic and optical disc featuring music and sound; CD drives, DVD drives, high-fidelity sound systems comprising remote controls, amplifiers, loudspeakers and components therefor, televisions, video projectors; connection stations for digital audio and video players; audio and video equipment, namely, audio and video recorders and reproducing apparatus; microprocessors and electronic power supplies and all apparatus, components and accessories therefor, used for the production, processing, measuring, analyzing, recording, amplification, improvement, production, reproduction, transmission, storage, checking, testing, receiving and playing of audio signals, files and sounds and visual signals, files and images; sound cards; motherboard; apparatus, namely, audio speakers and amplifiers and downloadable software for the improvement of analog and digital sound for the processing, recording, reproduction and streaming of electronic and digital signals; computer programs for use in creating, processing, measuring, analyzing, recording, amplifying, enhancing, reproducing, transmitting, controlling, testing, receiving and reading signals, audio files and sounds, and signals, visual files and images; downloadable computer software in the nature of recorded programs for use in creating, processing, measuring, analyzing, recording, amplifying, enhancing, reproducing, transmitting, controlling, testing, receiving and reading signals, audio files and sounds, and signals, visual files and images, and computer hardware and computer components and speakers and amplifiers for use in creating, processing, measuring, analyzing, recording, amplifying, enhancing, reproducing, transmitting, controlling, testing, receiving and reading signals, audio files and sounds, and signals, visual files and images; computer programs and software for encoding and decoding voice and audio signals; computer hardware and software for the processing, recording, reproduction, distribution, streaming, transmission and reception of electronic or digital signals; multi-channel digital sound processors, video processors and sound processors; equipment for alignment and testing for audio and video equipment for the processing, recording, reproduction, diffusion, streaming, transmission and reception of electronic or digital signals; digital signal processing chips; printed circuit boards; graphics cards; graphic processors; magnetic, optical and digital recording media; remote controls for loudspeaker cabinets, stereos, televisions and radios; stands for loudspeaker cabinets, stands for amplifiers, stands for televisions, stands for portable telephones, stands for photographic apparatus, stands for computer equipment, wall brackets for television screens; routers for routing of audio, video and digital signals; electronic, optical, electric and telephone connectors; downloadable digital music hosted on the Internet; ring tones, graphics and music downloadable via a global computer network and wireless devices; computer software for processing digital music files; computer software for creating and editing music and sounds; software for creating and editing music and sounds; amplifiers for musical instruments; compact disks featuring music; audio recordings featuring music; cases for music storage devices, covers for music storage devices, carrying cases for portable music players; electric and electronic effects units for musical instruments; electronic docking stations for digital music players; nautical apparatus and instruments, namely, sound radars for underwater activities; surveying apparatus and instruments; cinematographic cameras; measuring apparatus and instruments, namely, sound level meters for measuring sound and signal distortions; signaling apparatus and instruments, namely, signal processing devices to measure and treat signals; image recording apparatus; image transmission apparatus; image reproduction apparatus; compact discs (CDs) featuring music; DVDs, pre-recorded DVD's featuring music or video; mechanisms for coin-operated apparatus; cash registers; calculating machines; data processing equipment; computers; electronic tablets; smartphones; electronic book readers; game software; computer peripheral devices; detectors for radars; electric wires; electric relays; 3D spectacles; integrated circuit cards, namely, smart cards; bags designed for laptop computers; smartwatches; electric batteries; diagnostic apparatus not for medical use for testing sound level and pressure; phonograph; bags for computers, bags for loudspeaker cabinets; bags adapted for carrying electronic apparatus, video apparatus, photographic apparatus and equipment, cameras; bags and cases for mobile telephones and telephone equipment Leather; animal skins; trunks and suitcases; umbrellas and parasols; walking sticks; whips; saddlery; wallets; purses, namely, coin purses; wallets, namely, credit card cases; carry-all bags, canvas shopping bags, sports bags, traveling bags; vanity cases, not fitted; collars for animals; clothing for animals Furniture; mirrors; picture frames; works of art made of wood, wax, plaster or plastic materials; coat hangers; chests of drawers; cushions; shelves; packaging containers of plastic; armchairs; seats; mattresses; plate racks; boxes of wood or plastic Commercial business management; dissemination of advertising material, namely, leaflets, prospectuses, printed matter, samples; newspaper subscription services for others; arranging subscriptions to telecommunication services for others; providing television home shopping services in the field of general consumer merchandise; wholesale and retail store services featuring the sale of audio and audiovisual equipment, computer hardware and sound equipment, computer software, clothing, furniture, games, luggage, bags and pouches; online retail store services featuring downloadable prerecorded music and video files and downloadable ringtones; business management of wholesale and retail sale outlets; management of promotional and incentive sale programs; provision of on-line auction services; organization of the sale of products for third parties; obtaining of contracts on the purchase and sale of goods; administrative processing and organizing of mail order services; business administration services for the processing of sales made on the Internet; business management and organization consultancy; document reproduction; employment agency services; business management for freelance service providers; computer file management; web site traffic optimization; organization of exhibitions for commercial or advertising purposes; online advertising on a computer network; rental of advertising time on all communication media; publication of advertising texts; rental of advertising space; dissemination of advertisements; public relations; commercial intermediation services Education, namely, conducting seminars, conferences, workshops for sales networks, business partners in the field of sound and audio apparatus; training in the handling, installation, usage and operation of sound and audio apparatus; entertainment in the nature of providing plays, concerts, music shows, operas; sporting and cultural activities, educational and entertainment services, namely conducting programs featuring cultural activities in the nature of showcasing plays, concerts, music sessions, shows and operas; entertainment information; information relating to education; vocational retraining; provision of recreational facilities; publication of books; book lending; motion picture film production; rental of sound recordings; rental of television sets; rental of show scenery; videotape editing; photography services; organization and conducting of colloquiums on products and services about sound; organization and conducting of conferences on products and services about sound; organization and conducting of congresses on products and services about sound; organization of exhibitions for cultural or educational purposes; booking of seats for shows; game services provided on-line from a computer network; gambling services; electronic publication of books and journals of others online; electronic desktop publishing Technical evaluations concerning engineering design; scientific research; technical research in the field of products and services about sound; design of computers for others; computer development of computer software in the field of products and services about sound; computer software design; computer software development; research and development of new products for others; technical project study services in the field of products and services about sound; sound and acoustic architecture; design of interior decor; software development and design in the field of products and services about sound; computer software installation; computer software maintenance; updating of computer software; computer software rental; programming for computers for others; computer system analysis; computer system design; consultancy in the design and development of computer hardware; digitization of documents; software as a service (SaaS) services featuring software for use in sound products and services; cloud computing featuring software for use in products and services about sound; information technology (IT) consultancy; hosting of servers, namely, hosting the software, websites, and other computer applications of others on a virtual server; vehicle roadworthiness testing; graphic arts design services; styling in the nature of industrial design; authentication of works of art; energy auditing; electronic data storage

Abstract

A switching power supply is provided which includes an input for an input current at an input voltage, a controlled transistor bridge having two branches each with two transistors, the two branches being connected in parallel to the input terminals, a transformer having a primary connected between the midpoints of the two branches formed between the transistors of each branch, an output for an output current connected to the terminals of a secondary circuit of the transformer, and a control unit for the transistors to alternately switch each of the midpoints between high and low values with a time offset between the switching times of the midpoint values. The control unit is also capable of ensuring that the time order for switching of the midpoints between the high and low values thereof varies over the course of time.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/38 - Means for preventing simultaneous conduction of switches
• H02M 1/088 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
• H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 1/00 - Details of apparatus for conversion

Abstract

A method is provided for adapting an applied volume gain in an audio amplifier controlling at least one loudspeaker of an enclosure according to a desired volume gain selected by a user on a scale increased by a maximum desired volume gain, including determining effective intensity applied to the loudspeaker, calculating maximum volume gain from the desired volume gain, an effective intensity applied to the at least one loudspeaker, thermal characteristics of the loudspeaker, and the maximum desired volume gain, then calculating a variable applied volume gain according to an increasing monotonic function providing a variable applied volume gain according to the desired volume gain such that the image of the maximum desired volume gain by the monotonic function is equal to the maximum volume gain, and applying to the amplifier as applied volume gain, the minimum of the desired volume gain and the variable applied volume gain.

IPC Classes  ?

• H03G 7/08 - Volume compression or expansion in amplifiers having semiconductor devices incorporating negative feedback
• H03G 3/12 - Manually-operated control in untuned amplifiers having semiconductor devices incorporating negative feedback
• H03G 7/00 - Volume compression or expansion in amplifiers
• H04R 3/00 - Circuits for transducers

Abstract

ref(t)) for the excitation signal for the loudspeaker (14) as a function of the audio signal. It comprises an attenuator (71) that is capable of limiting the predicted current to a limited current value that is lower than a ceiling value by application, to the predicted current, of an attenuation gain which is a function of the predicted current.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 3/04 - Circuits for transducers for correcting frequency response
• H03G 3/00 - Gain control in amplifiers or frequency changers
• H03G 7/00 - Volume compression or expansion in amplifiers
• H02H 9/02 - Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
• H02H 7/06 - Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric generatorsEmergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for synchronous capacitors
• H03H 7/06 - Frequency selective two-port networks including resistors

Abstract

A method for controlling an operating parameter of an acoustic apparatus, including implementing a screen displaying at least one window including a cursor able to occupy positions relative to a reference of the window, the positions representing values of the operating parameter between a minimal and a maximal value, displaying the cursor in an initial position relative to the reference representative of an initial value of the operating parameter, acquiring an elementary command from an operator, moving the cursor with respect to the reference as a function of the elementary command, from the initial position to a final position in order to select a final value of the operating parameter in a range of selectable values containing the initial value, and sending the selected value to the acoustic apparatus, wherein the range of selectable values has an amplitude strictly less than the difference between the maximum and the minimum values.

IPC Classes  ?

• G06F 3/0484 - Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range
• G06F 3/16 - Sound inputSound output
• G06F 3/0488 - Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures

Abstract

The input stage (16) of a high-fidelity amplifier (10) with high linearity and a low distortion rate comprises: —an input (12) for the digital signal to be converted;—a voltage output (26) for the converted voltage;—a digital/analog converter (20), the input of which forms the input (12) for the digital signal to be converted, the digital/analog converter (20) having access to a signal terminal (24);—a voltage current conversion resistor (36) arranged between the voltage output (26) and a reference potential; and—a current/voltage converter (22) that has a voltage output and is arranged between the signal terminal (24) and the voltage outlet (26). The current/voltage converter (22) comprises a transistor (46). The source of the transistor (46) is only connected to the signal terminal (24) of the digital/analog converter (20).

IPC Classes  ?

• H03F 3/68 - Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
• H03F 1/32 - Modifications of amplifiers to reduce non-linear distortion
• H03F 1/08 - Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
• H03F 1/30 - Modifications of amplifiers to reduce influence of variations of temperature or supply voltage
• H03F 3/181 - Low-frequency amplifiers, e.g. audio preamplifiers
• H03F 3/16 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only with field-effect devices

Abstract

The current-to-voltage converter includes an input for the current to be converted, an output for the converted voltage, a current-to-voltage conversion resistor arranged between the output and a reference potential, a processing circuit including a transistor, the input being connected to the output via the transistor, a twin circuit including components identical to and disposed in a similar way to those of the processing circuit, a voltage follower connected at the input to the processing circuit and at the output to the twin circuit, and means for reinjecting the current at the output of the follower into the processing circuit.

IPC Classes  ?

• H02M 11/00 - Power conversion systems not covered by the other groups of this subclass
• H03F 3/45 - Differential amplifiers
• H03F 1/52 - Circuit arrangements for protecting such amplifiers
• H03F 3/16 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only with field-effect devices

Abstract

The invention relates to a current-to-voltage converter (22) that has a current reflector and comprises: a resistor (36) for converting the current to voltage arranged at the output (26); a current reflector circuit (38) comprising a first and a second constant-current generator (40, 42) each of which is connected to the output (26) and comprises a resistor (124, 126) and a transistor stage (128, 130) comprising a main transistor (128A, 130A), the gate of each transistor stage (128, 130) being connected to a fixed potential. Said converter comprises a single common gate stage (46) comprising a main transistor (46A) connected in series with the first constant-current generator (42). The common gate stage (46) and the transistor stage (128) of the second constant-current generator (40) each comprise a control member (46B, 128B) capable of imposing a control voltage on the gate of the main transistor (46A, 128A), the control members (46B, 128B) being connected in series to one another so as to form a branch (131) for reinjecting parasitic currents caused by the parasitic capacitances of the transistors (46A, 128A) into the current reflector circuit (38).

IPC Classes  ?

• H03F 1/08 - Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
• H03F 1/26 - Modifications of amplifiers to reduce influence of noise generated by amplifying elements

Abstract

The invention relates to a switching power supply (10) which comprises: an input (16) for a variable input current (I PRI) at an input voltage (V PRI); an output (36) for a direct output current (I sec); and, in series, from the input to the output, a system of controlled switches (20); a transformer (21) of which the primary (24) is connected at the output of the system of controlled switches (20); a rectifying circuit (28) connected to the terminals of a secondary circuit (26) of the transformer; and a storage capacitor (32) connected in parallel with the output terminals of the rectifying circuit (28) with a coil (34) positioned therebetween, the output (36) being formed at the terminals of the storage capacitor (32). Said supply also comprises means (22) for controlling the system of switches (20) in order to control the amplitude of the input current (I PRI) as a function of the input voltage (V PRI), the voltage (V sec) at the terminals of the storage capacitor (32), and the power (P n) provided at the output (36); and the control means (22) comprise means for calculating, in a cyclic manner, the power supplied, from a power supplied in an earlier cycle, and at least one variation of supplied power estimated at the output (36) on a cycle.

IPC Classes  ?

• H02M 7/217 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
• H02M 7/219 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration

Abstract

An audio amplifier has an input for an audio signal being amplified and an output powering a load on the basis of the amplified audio signal; a generator of reference voltage of very high linearity and low output impedance, able to receive, as input, the audio signal to be amplified; a power current generator including a power voltage generator whose output is connected to the output of the reference voltage generator through a coupling inductance; and a signal adder introducing, for its control, as input to the power current generator, a signal representative of the current provided as output by the reference voltage generator. The signal adder is able to introduce a signal representative of the product of the value of the coupling inductance and the drift with respect to time of the current provided to the load.

IPC Classes  ?

• H03F 3/68 - Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
• H03F 1/02 - Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
• H03F 1/34 - Negative-feedback-circuit arrangements with or without positive feedback
• H03F 3/21 - Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
• H03F 3/217 - Class D power amplifiersSwitching amplifiers
• H03F 3/185 - Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only with field-effect devices
• H03F 3/30 - Single-ended push-pull amplifiersPhase-splitters therefor
• H03F 3/45 - Differential amplifiers

Abstract

Packaging for an object, preferably having a mass between 2 and 25 kg, comprising a body having at least two parts movable between a closed configuration defining a housing to receive the object, and an open configuration, in which the two parts are separated from one another to allow the object to be removed. The body defining, when closed, a lower face intended to rest on a surface in a bearing direction; and a member fixing the two parts together. The body also comprises a base supporting the object when open, the base defining at least one portion of the lower face of the body when closed. At least one of said parts of the body is situated away from the base when open to arrange direct access to the object in at least one access direction substantially perpendicular to the bearing direction allowing removal of the object.

IPC Classes  ?

• B65D 81/113 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents specially adapted to protect contents from mechanical damage maintaining contents at spaced relation from package walls, or from other contents using blocks of shock-absorbing material of a shape specially adapted to accommodate contents
• B65D 5/50 - Internal supporting or protecting elements for contents
• B65D 85/68 - Containers, packaging elements or packages, specially adapted for particular articles or materials for machines, engines or vehicles in assembled or dismantled form

Abstract

a second suspension joint (40) of the assembly, the second joint being axially further away from the diaphragm than the first joint. The assembly further comprises at least one connecting member (59) secured to the diaphragm, the second joint including a radially inner attachment point (81) attached on the connecting member, and a radially outer attachment point (83) attached on the chassis.

IPC Classes  ?

• H04R 9/06 - Loudspeakers
• H04R 9/02 - Transducers of moving-coil, moving-strip, or moving-wire type Details
• H04R 7/18 - Mounting or tensioning of diaphragms or cones at the periphery
• H04R 7/12 - Non-planar diaphragms or cones

Abstract

The invention relates to a support for an audio system, the audio system comprising a heat source, a discharge surface for the heat and means for conducting at least one portion of the heat produced by the heat source towards the discharge surface. The support further comprises a plate comprising at least one heat-conducting elastic member able to deform for fitting at least one portion of the discharge surface of the audio system, and a thermal dissipation radiator in thermal contact with the elastic member.

IPC Classes  ?

• H04R 1/02 - CasingsCabinetsMountings therein
• F28D 21/00 - Heat-exchange apparatus not covered by any of the groups
• H04R 9/06 - Loudspeakers
• H04B 1/00 - Details of transmission systems, not covered by a single one of groups Details of transmission systems not characterised by the medium used for transmission
• H04R 9/02 - Transducers of moving-coil, moving-strip, or moving-wire type Details
• F28F 21/06 - Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
• F28F 13/00 - Arrangements for modifying heat transfer, e.g. increasing, decreasing

Abstract

an output for supplying an excitation signal from the loudspeaker. ref).

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 3/04 - Circuits for transducers for correcting frequency response
• H04R 29/00 - Monitoring arrangementsTesting arrangements
• H04R 9/06 - Loudspeakers
• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means

Abstract

ref). ref) of the loudspeaker diaphragm.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 3/04 - Circuits for transducers for correcting frequency response
• H04R 1/02 - CasingsCabinetsMountings therein
• H04R 29/00 - Monitoring arrangementsTesting arrangements

Abstract

Loudspeaker enclosure comprising at least one loudspeaker having a convex mobile membrane, and a member surrounding the mobile membrane and comprising an external surface bounded by an internal edge (Γ′) situated facing the mobile membrane, which comprises a peripheral edge (Γ) situated facing the internal edge of the member and forming a closed loop. The mobile membrane and the member have a suitable shape such that, over a continuous portion (Γ″) of the peripheral edge (Γ) representing at least 25% of the length of the peripheral edge, for any first point (M) on the continuous portion and any second point (M′) situated on the internal edge at a location such that the distance between the first point (M) and second point (M′) is minimal, the mobile membrane has, at the first point, a first tangent plane, essentially coincident with a second tangent plane at the second point.

IPC Classes  ?

• H04R 1/00 - Details of transducers
• H04R 1/24 - Structural combinations of separate transducers or of parts of the same transducer and responsive respectively to two or more frequency ranges
• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
• H04R 7/12 - Non-planar diaphragms or cones
• H04R 5/02 - Spatial or constructional arrangements of loudspeakers

Abstract

at least one electronic control circuit (10) of the loudspeaker. The motor and the electronic circuit are connected to a same member (15) of the acoustic enclosure. The member conducts heat and includes an exchange surface (66) able to be traversed by a heat flow (68) circulating in the member originating from the motor and the electronic circuit when the acoustic enclosure is operating, the heat flow being intended to dissipate in the air (76) outside the acoustic enclosure or to pass into a heat-conducting element outside the acoustic enclosure.

IPC Classes  ?

• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency responseTransducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
• H04R 3/00 - Circuits for transducers
• H04R 9/02 - Transducers of moving-coil, moving-strip, or moving-wire type Details

Abstract

The invention relates to a switching power supply comprising: - an input (16) for an input current (IPRI) at an input voltage (VPRI). - a controlled transistor bridge (22A1, 22A2, 22B1, 22B2) comprising two branches (22A, 22B) each comprising two series-connected transistors, the two branches (22A, 22B) being connected in parallel to the input terminals (16); - a transformer (21) where the primary (25) is connected between the midpoints (26A, 26B) of the two branches (22A, 22B) formed between the series-connected transistors of each branch (22A, 22B); - an output for an output current (ISEC) connected to the terminals of a secondary circuit (27) of the transformer (21); and - a control unit (23A, 23B, 24) for the transistors to alternately switch each of the midpoints (26A, 26B) between high and low values with a time offset between the switching times of the midpoint values (26A, 26B). The control unit (23A, 23B, 24) is suitable such that the time order for switching the midpoints (26A, 26B) between the high and low values thereof varies as a function of time.

IPC Classes  ?

• H02M 3/335 - Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only

Abstract

The present invention concerns a method for synchronising at least two systems for rendering multimedia streams, the method comprising: - detecting a pulse of a same signal of fixed frequency by each rendering system and by a main clock system, - generating a main clock signal and a dependent clock signal, - estimating a main local date of reception of the next pulse and a dependent local date of reception of the next pulse, - calculating the difference between the main local date and the dependent local date, - iterating the preceding steps until a first condition concerning the calculated differences is met, - receiving a multimedia stream, by each of the rendering systems, - sending a rendering date, and - calculating an effective date for the rendering of the multimedia stream.

IPC Classes  ?

• H04N 21/242 - Synchronization processes, e.g. processing of PCR [Program Clock References]
• H04R 27/00 - Public address systems
• H04N 21/434 - Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams or extraction of additional data from a video streamRemultiplexing of multiplex streamsExtraction or processing of SIDisassembling of packetised elementary stream
• H04N 21/81 - Monomedia components thereof

Abstract

The invention relates to a device for controlling a loudspeaker (14) in an enclosure, comprising: an inlet for an audio signal to be reproduced; an outlet for supplying an excitation signal of the loudspeaker; and means (26, 36, 38, 70, 71, 80, 90) for calculating, at all times (t), at least one predicted current (iref(t)) for the excitation signal of the loudspeaker (14) according to the audio signal. It comprises an attenuator (71) for limiting the predicted current to a limited current value lower than a threshold value by applying, to the predicted current, an attenuation gain which is a function of the predicted current.

IPC Classes  ?

• H03G 11/00 - Limiting amplitudeLimiting rate of change of amplitude
• H04R 3/00 - Circuits for transducers

Abstract

The invention relates to a method for adapting the volume gain (GVolume appliqué) to be applied by an amplifier to at least one audio signal (SAudio 1 to SAudio N) to be reproduced, according to the desired volume gain (GVolume désiré) selected by a user, said method comprising the steps of: calculating a standardised total slow sound level (NSLTN) from the at least one signal (SAudio 1 to SAudio N) to be reproduced; calculating a maximum slow volume gain (GVolLentMax) and a minimum slow volume gain (GVolLentMin) as the quotient of the product of the desired volume gain (GVolume désiré) by dividing a maximum slow gain (GLentMax) or respectively a minimum slow gain (GLentMin) by the standardised total slow sound level NSLTN); determining a first minimum out of the desired volume gain (Gvolume désiré) and the maximum slow volume gain (GVolLentMax); determining a second minimum out of the desired volume gain (GVolume désiré) multiplied by a maximum volume gain (GmaxVolume) and the minimum slow volume gain (GvolLentMin); determining, as a slow volume gain (GVolume Lent), the maximum of the first and second previously determined minima; and calculating the volume gain applied (GVolume appliqué) according to the slow volume gain (GVolume Lent).

IPC Classes  ?

• H03G 3/20 - Automatic control

Abstract

The invention relates to a method for adapting the applied volume gain in an amplifier controlling at least one loudspeaker of an enclosure according to the desired volume gain selected by a user on a scale increased by a maximum desired volume gain, said method comprising steps of: determining (204) the effective intensity applied to at least one loudspeaker; calculating (206 and 208) a maximum volume gain from: the desired volume gain, the effective intensity applied to the loudspeaker, thermal characteristics of the loudspeaker, and the maximum desired volume gain; calculating (210) an increasing monotonic function providing an applied volume gain variable according to the desired volume gain such that the image of the maximum desired volume gain by the monotonic function is equal to the maximum volume gain; and applying (212), to the amplifier, as an applied volume gain, the minimum of the maximum volume gain and the applied volume gain which is variable for the desired volume gain.

IPC Classes  ?

• H03G 3/12 - Manually-operated control in untuned amplifiers having semiconductor devices incorporating negative feedback
• H03G 7/00 - Volume compression or expansion in amplifiers
• H03G 7/08 - Volume compression or expansion in amplifiers having semiconductor devices incorporating negative feedback

Abstract

The invention relates to a method for adapting the applied volume gain in an amplifier controlling at least one loudspeaker of an enclosure according to the desired volume gain selected by a user on a scale increased by a maximum desired volume gain, said method comprising steps of: determining (204) the effective intensity applied to at least one loudspeaker; calculating (206 and 208) a maximum volume gain from: the desired volume gain, the effective intensity applied to the loudspeaker, thermal characteristics of the loudspeaker, and the maximum desired volume gain; calculating (210) an increasing monotonic function providing an applied volume gain variable according to the desired volume gain such that the image of the maximum desired volume gain by the monotonic function is equal to the maximum volume gain; and applying (212), to the amplifier, as an applied volume gain, the minimum of the maximum volume gain and the applied volume gain which is variable for the desired volume gain.

IPC Classes  ?

• H03G 3/12 - Manually-operated control in untuned amplifiers having semiconductor devices incorporating negative feedback
• H03G 11/00 - Limiting amplitudeLimiting rate of change of amplitude
• H04R 3/00 - Circuits for transducers

Abstract

The invention relates to a device for controlling a loudspeaker (14) in an enclosure, comprising: an inlet for an audio signal to be reproduced; an outlet for supplying an excitation signal of the loudspeaker; and means (26, 36, 38, 70, 71, 80, 90) for calculating, at all times (t), at least one predicted current (iref(t)) for the excitation signal of the loudspeaker (14) according to the audio signal. It comprises an attenuator (71) for limiting the predicted current to a limited current value lower than a threshold value by applying, to the predicted current, an attenuation gain which is a function of the predicted current.

IPC Classes  ?

• H03G 7/00 - Volume compression or expansion in amplifiers
• H04R 3/00 - Circuits for transducers

Abstract

The invention relates to a method for adapting the volume gain (GVolume appliqué) to be applied by an amplifier to at least one audio signal (SAudio 1 to SAudio N) to be reproduced, according to the desired volume gain (GVolume désiré) selected by a user, said method comprising the steps of: calculating a standardised total slow sound level (NSLTN) from the at least one signal (SAudio 1 to SAudio N) to be reproduced; calculating a maximum slow volume gain (GVolLentMax) and a minimum slow volume gain (GVolLentMin) as the quotient of the product of the desired volume gain (GVolume désiré) by dividing a maximum slow gain (GLentMax) or respectively a minimum slow gain (GLentMin) by the standardised total slow sound level NSLTN); determining a first minimum out of the desired volume gain (Gvolume désiré) and the maximum slow volume gain (GVolLentMax); determining a second minimum out of the desired volume gain (GVolume désiré) multiplied by a maximum volume gain (GmaxVolume) and the minimum slow volume gain (GvolLentMin); determining, as a slow volume gain (GVolume Lent), the maximum of the first and second previously determined minima; and calculating the volume gain applied (GVolume appliqué) according to the slow volume gain (GVolume Lent).

IPC Classes  ?

• H03G 7/00 - Volume compression or expansion in amplifiers

Abstract

A method for controlling an operating parameter of an acoustic apparatus (10), comprising at least the following steps: - provision of a screen (25) displaying at least one window (40) comprising a cursor (60) able to occupy a plurality of positions with respect to a reference (55) of the window, the positions of the cursor being respectively representative of a plurality of values of the operating parameter extending between a minimum value and a maximum value, - display of the cursor in an initial position with respect to the reference representative of an initial value of the operating parameter, - acquisition of an elementary command from an operator, - movement of the cursor with respect to the reference as a function of the acquired elementary command, from the initial position to a final position in order to select a final value of the operating parameter in a range of selected values containing the initial value, and - transmission to the acoustic apparatus of the selected final value, characterized in that the range of selectable values has an amplitude strictly less than the difference between the maximum value and the minimum value.

IPC Classes  ?

• G06F 3/0484 - Interaction techniques based on graphical user interfaces [GUI] for the control of specific functions or operations, e.g. selecting or manipulating an object, an image or a displayed text element, setting a parameter value or selecting a range

Abstract

This electroacoustic conversion chain comprising at least one loudspeaker, this loudspeaker comprising means for generating a magnetic field in a magnetic circuit having an air gap and a membrane secured to turns of a conducting material which may move in this air gap, is characterized in that it comprises at least one control module comprising at least one input for conveying a signal to be broadcast and at least one output connected to a turn, the control module being able to apply to said or each output an excitation signal depending on the position of at least one turn relatively to the air gap.

IPC Classes  ?

• H04R 29/00 - Monitoring arrangementsTesting arrangements
• G10L 19/083 - Determination or coding of the excitation functionDetermination or coding of the long-term prediction parameters the excitation function being an excitation gain
• H04R 3/00 - Circuits for transducers
• H04R 9/02 - Transducers of moving-coil, moving-strip, or moving-wire type Details
• H04R 9/04 - Construction, mounting, or centering of coil

Abstract

The input stage (16) of a high-fidelity amplifier (10) with high linearity and a low distortion rate comprises: - an input (12) for the digital signal to be converted; - a voltage output (26) for the converted voltage; - a digital/analog converter (20), the input of which forms the input (12) for the digital signal to be converted, the digital/analog converter (20) having access to a signal terminal (24); - a voltage current conversion resistor (36) arranged between the voltage output (26) and a reference potential; and - a current/voltage converter (22) that has a voltage output and is arranged between the signal terminal (24) and the voltage outlet (26). The current/voltage converter (22) comprises a transistor (46). The source of the transistor (46) is only connected to the signal terminal (24) of the digital/analog converter (20).

IPC Classes  ?

• H03F 1/08 - Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
• H03F 1/30 - Modifications of amplifiers to reduce influence of variations of temperature or supply voltage
• H03F 1/32 - Modifications of amplifiers to reduce non-linear distortion
• H03F 3/181 - Low-frequency amplifiers, e.g. audio preamplifiers

Abstract

The current-to-voltage converter (22) comprises: - an input (24) for the current to be converted; - an output (26) for the converted voltage; - a current-to-voltage conversion resistor (36) arranged between the output (26) and a reference potential, - a processing circuit (40) comprising a transistor (60), the input (24) being connected to the output (26) via the transistor (60), - a twin circuit (46) comprising components identical to and disposed in a similar way to those of the processing circuit (40), - a voltage follower (50) connected at the input to the processing circuit (40) and at the output to the twin circuit (46), and - means (51) for reinjecting the current at the output of the follower (50) into the processing circuit (40).

IPC Classes  ?

• H03F 1/08 - Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
• H03F 3/181 - Low-frequency amplifiers, e.g. audio preamplifiers