To facilitate attaching and detaching a windscreen to and from a microphone and prevent the windscreen from dropping off from the microphone. The microphone windscreen 20 includes a windscreen body 21 detachably attached to the microphone 10 and an attachment/detachment member coupled to the windscreen body. The windscreen body includes an insertion cavity 211h where the microphone is accommodated. The attachment/detachment member includes an insertion hole 223h through which the microphone accommodated in the cavity is placed and a claw portion 224 being bendable and disposed at the hole. The claw portion is located at a steady-state position without bending before the microphone is inserted through the hole toward the cavity, the claw portion is bent toward the cavity by the microphone during the microphone being inserted through the hole into the cavity, and the claw portion returns to the steady-state position after the microphone is accommodated in the cavity.
This electroacoustic transducer has a diaphragm and a magnetic circuit part. The magnetic circuit part includes a permanent magnet, a pole piece that is magnetically connected to one surface of the permanent magnet in the thickness direction, and a yoke body that includes a bottom portion, and a peripheral wall portion and that is magnetically connected to the other surface of the permanent magnet in the thickness direction on the bottom portion. At least one of the pole piece and the bottom portion of the yoke body is a laminate in which a plurality of magnetic metal plates are stacked in the thickness direction of the permanent magnet with electrical insulation between each plate.
An electro-acoustic transducer includes: a housing, a partition member disposed inside the housing, a first electro-acoustic conversion unit, and a second electro-acoustic conversion unit. The first electro-acoustic conversion unit includes a fixed electrode, a vibrating membrane, and a support member that supports a partial region of the vibrating membrane and brings a part of the vibrating membrane in contact with the fixed electrode. The first electro-acoustic conversion unit and the second electro-acoustic conversion unit are disposed facing each other across the partition member so that a sound emitting part and a sound emitting part communicate with an acoustic outlet, and the partition member supports the support member and the support member.
A microphone fixing device includes a support shaft inserted into a fitting hole of a base with the microphone attached to the top end, a spacer ring fitted into the lower end of the support shaft, and a nut screwed onto the support shaft to press the spacer ring to the lower surface of the base, a gap allowing a microphone cable to be inserted is provided between the support shaft and the fitting hole, the spacer ring includes a small diameter part entering into the gap and a large diameter part abutting a lower surface of the base, a cable drawing out groove is formed from the small diameter part to the large diameter part to draw out the microphone cable to the lower surface of the base, and the microphone is fixed to an upper surface of the base via the support shaft by fastening of the nut.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Apparatus for power controlling and distributing; electric
sockets, plugs and other electric connections; fuses; plug
adaptors; battery chargers; electrical power supplies; noise
filter for wiring or power supply; apparatus for power
controlling and distributing for automobiles; light control
device for facilities for karaoke and their parts and
accessories; stage and studio lighting control device and
their parts and accessories; electrical cells and batteries;
batteries for automobiles; electric wires and cables; audio
cables; speaker cables; headset cables; video cables;
microphone cables; lead wires; electric wires and cables for
automobiles; apparatus for recording, transmission or
reproduction of sound and videos; audio players; camcorders;
equalizers; electric signal amplifier for audio or video;
signal amplifiers; headphone amplifiers; apparatus for
installing audio systems, namely, mounting racks adapted for
audio systems, cable connectors for audio systems, mounting
brackets adapted for audio systems; insulated electrical
connectors and telecommunications cables for installing
audio equipments; transmitters and receivers for optical
radio transmission; headsets and their parts and
accessories; headphones and their parts and accessories;
earphones and their parts and accessories; cases for
earphones; cases for headphones; microphones and their parts
and accessories; covers for microphones; microphone
protectors; cases for microphones; microphone windscreens;
microphone holders and their parts; booms for microphones;
microphone stands; speakers and their parts and accessories;
carrier bags for speakers; speaker mounting brackets; stands
for speakers; radio transmitters and radio receivers and
their parts and accessories; aerials; cable transmitters and
cable receivers and their parts and accessories; record
players and their parts and accessories; disk stabilizer;
phono equalizers; headshells for phono cartridges; cleaning
apparatus for phonograph records; phono cartridges for
record players; pickups for record players; tone arms for
record players; needles for record players; record player
turntables; parts and accessories for apparatus for
recording, transmission or reproduction of sound and videos;
telecommunication apparatus for conference system and their
parts and accessories; telecommunication controlling
equipment for conference system; voting machines for
conference system; telecommunication controlling equipment
for translators; loudspeakers and their parts and
accessories; electroacoustic transducers; parts and
accessories for telecommunication machines and apparatus;
audio, video selectors; audio, video dividers; audio mixers;
video mixers; video processors; sound signal converters;
sound signal transports; sound signal transmitters;
telecommunications apparatus for automobiles; audio
equipments for automobiles with sound-absorbing properties;
audio equipments for automobiles with sound insulation;
audio equipments for automobiles with heat sensors and
regulators; audio equipments for automobiles with vibration
damping properties; soundproof audio equipments for
automobiles; waterproof audio equipments for automobiles;
electric and electronic effects units for audiovisual
equipment; electronic data processing machines, apparatus
and their parts; noise filters for telecommunication
machines or for electronic machines; electronic audiovisual
and telecommunication machines for automobiles and their
parts; telecommunication machines and apparatus; virtual
reality headsets; personal digital assistants.
Provided is a microphone device with a reduced impact on a windscreen (a windscreen part) caused by an installed environment. The microphone device includes a microphone that outputs an electrical signal in response to a sound wave, a housing portion that accommodates the microphone, and a windscreen part that reduces a pressure of wind caused by the wind entering into the housing portion. The housing portion includes a hollow cylindrical housing body and a cap attached to one end of the housing body in the axial direction of the housing body. The windscreen part is accommodated in the housing body and disposed between the cap and the microphone. The cap is solid. The cap includes a sound guide hole that guides the sound wave to the microphone. The sound guide hole is disposed along the axial direction.
H04R 1/34 - Dispositions pour obtenir la fréquence désirée ou les caractéristiques directionnelles pour obtenir la caractéristique directionnelle désirée uniquement en utilisant un seul transducteur avec des moyens réfléchissant, diffractant, dirigeant ou guidant des sons
[Problem ] To provide an electroacoustic transducer capable of maintaining stable performance. [Solution] An electroacoustic transducer 1 for transmitting vibration to bone comprises a main frame 10 having at least a cylindrical section, a vibration part 30 which is disposed inside of the main frame and vibrates along the axial direction of the main frame according to an input signal, and an elastic member 20 which is connected to at least the vibration part and is formed of an organic material or a polymer material.
A handheld microphone 1 comprises: a base 3 that has a sound collection part 2 attached to one end side thereof and that is provided with a battery storage chamber 30; a grip 4 that is fitted to the base 3 and that covers the battery storage chamber 30 so as to be openable and closable; a battery cover 5 that has a first surface that abuts a battery 10 stored in the battery storage chamber 30. The battery cover 5 is provided with, on a second surface opposite to the first surface, a projection part 52 that abuts the inner circumferential surface of the grip 4 in a state where the battery storage chamber 30 is closed by the grip 4.
H01M 50/291 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports caractérisés par des éléments d’espacement ou des moyens de positionnement dans les racks, les cadres ou les blocs caractérisés par leur forme
H01M 50/213 - Bâtis, modules ou blocs de multiples batteries ou de multiples cellules caractérisés par leur forme adaptés aux cellules ayant une section transversale courbée, p. ex. ronde ou elliptique
H01M 50/242 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports caractérisés par les propriétés physiques des boîtiers ou des bâtis, p. ex. dimensions adaptés pour protéger les batteries contre les vibrations, les collisions ou le gonflement
H01M 50/244 - Boîtiers secondairesBâtisDispositifs de suspensionDispositifs de manutentionSupports caractérisés par leur procédé de montage
H01M 50/247 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports spécialement adaptés aux dispositifs portatifs, p. ex. aux téléphones portables, aux ordinateurs, aux outils à main ou aux stimulateurs cardiaques
H01M 50/271 - Couvercles des boîtiers secondaires, des bâtis ou des blocs
H01M 50/289 - MonturesBoîtiers secondaires ou cadresBâtis, modules ou blocsDispositifs de suspensionAmortisseursDispositifs de transport ou de manutentionSupports caractérisés par des éléments d’espacement ou des moyens de positionnement dans les racks, les cadres ou les blocs
H04R 1/02 - BoîtiersMeublesMontages à l'intérieur de ceux-ci
16.
HEADPHONE SYSTEM, HEADPHONE, AND HEADPHONE CHARGER
The present invention provides a headphone system, a headphone, and a headphone charger that are equipped with a new blinking mode for when a battery is being charged. This headphone system is constituted by including a headphone, a charger that charges the headphone, and an indicator lamp that indicates the charging state of the headphone and/or the charger by blinking. The indicator lamp is provided on the headphone and/or the charger; the blinking period includes a first period during which the brightness of the indicator lamp gradually increases and a second period during which the brightness gradually decreases; the first period and the second period repeat in alternation; and the length of the first period differs from the length of the second period.
H02J 7/02 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge des batteries par réseaux à courant alternatif au moyen de convertisseurs
09 - Appareils et instruments scientifiques et électriques
35 - Publicité; Affaires commerciales
37 - Services de construction; extraction minière; installation et réparation
38 - Services de télécommunications
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Apparatus for power controlling and distributing; electric
sockets, plugs and other electric connections; fuses; plug
adaptors; battery chargers; electrical power supplies; noise
filter for wiring or power supply; apparatus for power
controlling and distributing for automobiles; light control
device for facilities for karaoke and their parts and
accessories; stage and studio lighting control device and
their parts and accessories; electrical cells and batteries;
batteries for automobiles; electric wires and cables; audio
cables; speaker cables; headset cables; video cables;
microphone cables; lead wires; electric wires and cables for
automobiles; apparatus for recording, transmission or
reproduction of sound and videos; audio players; camcorders;
equalizers; electric signal amplifier for audio or video;
signal amplifiers; headphone amplifiers; apparatus for
installing audio systems, namely, mounting racks adapted for
audio systems, cable connectors for audio systems, mounting
brackets adapted for audio systems; transmitters and
receivers for optical radio transmission; headsets and their
parts and accessories; headphones and their parts and
accessories; earphones and their parts and accessories;
cases for earphones; cases for headphones; microphones and
their parts and accessories; covers for microphones;
microphone protectors; cases for microphones; microphone
windscreens; microphone holders and their parts; booms for
microphones; microphone stands; speakers and their parts and
accessories; carrier bags for speakers; speaker mounting
brackets; stands for speakers; radio transmitters and radio
receivers and their parts and accessories; aerials; cable
transmitters and cable receivers and their parts and
accessories; record players and their parts and accessories;
disk stabilizer; phono equalizers; headshells for phono
cartridges; cleaning apparatus for phonograph records; phono
cartridges for record players; pickups for record players;
tone arms for record players; needles for record players;
record player turntables; parts and accessories for
apparatus for recording, transmission or reproduction of
sound and videos; telecommunication apparatus for conference
system and their parts and accessories; telecommunication
controlling equipment for conference system;
telecommunication apparatus for conference system; voting
machines for conference system; telecommunication
controlling equipment for translators; loudspeakers and
their parts and accessories; electroacoustic transducers;
parts and accessories for telecommunication machines and
apparatus; electric signal amplifier for audio and video;
audio, video selectors; audio, video dividers; audio mixers;
video mixers; video processors; sound signal converters;
sound signal transports; sound signal transmitters;
telecommunications apparatus for automobiles; electric and
electronic effects units for audiovisual equipment;
electronic data processing machines, apparatus and their
parts; noise filters for telecommunication machines or for
electronic machines; electronic audiovisual and
telecommunication machines for automobiles and their parts;
computer software for recording, transmission and
reproduction of sound and videos; telecommunication machines
and apparatus; computer software for editing of sound and
videos; computer software programs; application software;
downloadable computer software; application software for
audio apparatus; computer software for controlling the
operation of audio and video devices; virtual reality
headsets; personal digital assistants; downloadable
electronic game programs; game programs for arcade video
game machines; game programs for home video game machines;
insulated electrical connectors and telecommunications
cables for installing audio equipments; audio equipments for
automobiles with sound-absorbing properties; audio
equipments for automobiles with sound insulation; audio
equipments for automobiles with heat sensors and regulators;
audio equipments for automobiles with vibration damping
properties; soundproofing audio equipments for automobiles;
waterproof audio equipments for automobiles. Advertising and publicity services; business management
analysis or business consultancy; business management
supervision; marketing research or analysis; providing
information concerning commercial sales; compilation of
information into computer databases; providing business
assistance to others in the operation of data processing
apparatus namely, computers, typewriters, telex machines and
other similar office machines; rental of typewriters and
copying machines; retail services or wholesale services for
electrical machinery and apparatus. Construction services; repair or maintenance of electronic
machines and apparatus; repair or maintenance of
telecommunication machines and apparatus. Telecommunication, other than broadcasting; broadcasting
services; rental of telecommunication equipment, including
telephones and facsimile apparatus. Computer programming; rental of computers; providing
computer programs on data networks.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Apparatus for power controlling and distributing; electric sockets, plugs and other electric connections; fuses; plug adaptors; battery chargers; electrical power supplies; noise filter for wiring or power supply; apparatus for power controlling and distributing for automobiles; light control device for facilities for karaoke and their parts and accessories; stage and studio lighting control device and their parts and accessories; electrical cells and batteries; batteries for automobiles; electric wires and cables; audio cables; speaker cables; headset cables; video cables; microphone cables; lead wires; electric wires and cables for automobiles; apparatus for recording, transmission or reproduction of sound and videos; audio players; camcorders; equalizers; electric signal amplifier for audio or video; signal amplifiers; headphone amplifiers; apparatus for installing audio systems, namely, mounting racks adapted for audio systems, cable connectors for audio systems, mounting brackets adapted for audio systems; insulated electrical connectors and telecommunications cables for installing audio equipments; transmitters and receivers for optical radio transmission; headsets and their parts and accessories; headphones and their parts and accessories; earphones and their parts and accessories; cases for earphones; cases for headphones; microphones and their parts and accessories; covers for microphones; microphone protectors; cases for microphones; microphone windscreens; microphone holders and their parts; booms for microphones; microphone stands; speakers and their parts and accessories; carrier bags for speakers; speaker mounting brackets; stands for speakers; radio transmitters and radio receivers and their parts and accessories; aerials; cable transmitters and cable receivers and their parts and accessories; record players and their parts and accessories; disk stabilizer; phono equalizers; headshells for phono cartridges; cleaning apparatus for phonograph records; phono cartridges for record players; pickups for record players; tone arms for record players; needles for record players; record player turntables; parts and accessories for apparatus for recording, transmission or reproduction of sound and videos; telecommunication apparatus for conference system and their parts and accessories; telecommunication controlling equipment for conference system; voting machines for conference system; telecommunication controlling equipment for translators; loudspeakers and their parts and accessories; electroacoustic transducers; parts and accessories for telecommunication machines and apparatus; audio, video selectors; audio, video dividers; audio mixers; video mixers; video processors; sound signal converters; sound signal transports; sound signal transmitters; telecommunications apparatus for automobiles; audio equipments for automobiles with sound-absorbing properties; audio equipments for automobiles with sound insulation; audio equipments for automobiles with heat sensors and regulators; audio equipments for automobiles with vibration damping properties; soundproof audio equipments for automobiles; waterproof audio equipments for automobiles; electric and electronic effects units for audiovisual equipment; electronic data processing machines, apparatus and their parts; noise filters for telecommunication machines or for electronic machines; electronic audiovisual and telecommunication machines for automobiles and their parts; telecommunication machines and apparatus; virtual reality headsets; personal digital assistants.
09 - Appareils et instruments scientifiques et électriques
35 - Publicité; Affaires commerciales
37 - Services de construction; extraction minière; installation et réparation
38 - Services de télécommunications
42 - Services scientifiques, technologiques et industriels, recherche et conception
Produits et services
Apparatus for power controlling and distributing; electric
sockets, plugs and other electric connections; fuses; plug
adaptors; battery chargers; electrical power supplies; noise
filter for wiring or power supply; apparatus for power
controlling and distributing for automobiles; light control
device for facilities for karaoke and their parts and
accessories; stage and studio lighting control device and
their parts and accessories; electrical cells and batteries;
batteries for automobiles; electric wires and cables; audio
cables; speaker cables; headset cables; video cables;
microphone cables; lead wires; electric wires and cables for
automobiles; apparatus for recording, transmission or
reproduction of sound and videos; audio players; camcorders;
equalizers; electric signal amplifier for audio or video;
signal amplifiers; headphone amplifiers; apparatus for
installing audio systems, namely, mounting racks adapted for
audio systems, cable connectors for audio systems, mounting
brackets adapted for audio systems; transmitters and
receivers for optical radio transmission; headsets and their
parts and accessories; headphones and their parts and
accessories; earphones and their parts and accessories;
cases for earphones; cases for headphones; microphones and
their parts and accessories; covers for microphones;
microphone protectors; cases for microphones; microphone
windscreens; microphone holders and their parts; booms for
microphones; microphone stands; speakers and their parts and
accessories; carrier bags for speakers; speaker mounting
brackets; stands for speakers; radio transmitters and radio
receivers and their parts and accessories; aerials; cable
transmitters and cable receivers and their parts and
accessories; record players and their parts and accessories;
disk stabilizer; phono equalizers; headshells for phono
cartridges; cleaning apparatus for phonograph records; phono
cartridges for record players; pickups for record players;
tone arms for record players; needles for record players;
record player turntables; parts and accessories for
apparatus for recording, transmission or reproduction of
sound and videos; telecommunication apparatus for conference
system and their parts and accessories; telecommunication
controlling equipment for conference system;
telecommunication apparatus for conference system; voting
machines for conference system; telecommunication
controlling equipment for translators; loudspeakers and
their parts and accessories; electroacoustic transducers;
parts and accessories for telecommunication machines and
apparatus; electric signal amplifier for audio and video;
audio, video selectors; audio, video dividers; audio mixers;
video mixers; video processors; sound signal converters;
sound signal transports; sound signal transmitters;
telecommunications apparatus for automobiles; electric and
electronic effects units for audiovisual equipment;
electronic data processing machines, apparatus and their
parts; noise filters for telecommunication machines or for
electronic machines; electronic audiovisual and
telecommunication machines for automobiles and their parts;
computer software for recording, transmission and
reproduction of sound and videos; telecommunication machines
and apparatus; computer software for editing of sound and
videos; computer software programs; application software;
downloadable computer software; application software for
audio apparatus; computer software for controlling the
operation of audio and video devices; virtual reality
headsets; personal digital assistants; downloadable
electronic game programs; game programs for arcade video
game machines; game programs for home video game machines;
insulated electrical connectors and telecommunications
cables for installing audio equipments; audio equipments for
automobiles with sound-absorbing properties; audio
equipments for automobiles with sound insulation; audio
equipments for automobiles with heat sensors and regulators;
audio equipments for automobiles with vibration damping
properties; soundproofing audio equipments for automobiles;
waterproof audio equipments for automobiles. Advertising and publicity services; business management
analysis or business consultancy; business management
supervision; marketing research or analysis; providing
information concerning commercial sales; compilation of
information into computer databases; providing business
assistance to others in the operation of data processing
apparatus namely, computers, typewriters, telex machines and
other similar office machines; rental of typewriters and
copying machines; retail services or wholesale services for
electrical machinery and apparatus. Construction services; repair or maintenance of electronic
machines and apparatus; repair or maintenance of
telecommunication machines and apparatus. Telecommunication, other than broadcasting; broadcasting
services; rental of telecommunication equipment, including
telephones and facsimile apparatus. Computer programming; rental of computers; providing
computer programs on data networks.
Provided is a noise-cancelling headphone device that prevents deterioration of reproduction frequency characteristics in a high-frequency band while preventing reduction in the reproduction output in the low-frequency band. The proposed technology is a noise-cancelling headphone device, including a speaker unit provided with a dome-shaped diaphragm having a center dome and a sub-dome, a microphone that detects ambient noise incident into the speaker unit, a baffle plate supporting the speaker unit and provided with sound emission holes to radiate reproduction sound emitted from the speaker unit, and a signal processing circuit to generate noise cancellation signal generated based on the ambient noise detected by the microphone, wherein an acoustic resistance member is provided at the position facing the sub-dome of the dome diaphragm.
G10K 11/178 - Procédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général utilisant des effets d'interférenceMasquage du son par régénération électro-acoustique en opposition de phase des ondes acoustiques originales
[Problem] To provide a configuration for generating bone conduction vibrations and guaranteeing high-quality sound by realizing fit to the cranium regardless of variation between individuals. [Solution] Provided is an acoustic apparatus 1000 comprising: an electro-acoustic converter 1 that generates vibrations which are propagated to a bone of a wearer; a housing 2 that accommodates the electro-acoustic converter; and an elastic member 2b that is provided to at least an outer side surface 2a of the housing, said surface facing the wearer when the apparatus is worn.
This delta-sigma AD converter comprises: a first subtraction circuit which outputs a first reduction signal obtained by subtracting a feedback signal from an input analog signal; an addition circuit which outputs an addition signal obtained by adding a correction signal to an integration signal obtained by integrating the first subtraction signal; a quantization circuit which outputs an output signal obtained by quantizing the addition signal; a DA conversion circuit which converts the output signal quantized by the quantization circuit into an analog discrete signal and supplies the analog discrete signal to the first reduction circuit; a second subtraction circuit which subtracts the analog discrete signal from the addition signal and outputs the subtraction signal as a second subtraction signal; and a delay circuit which supplies, to the addition circuit as the correction signal, a signal obtained by delaying a filtering signal obtained by filtering the second subtraction signal.
A digital filter generating method comprising: a step for identifying a discrete Fourier transform matrix for transforming input time-series data into frequency data; a step for identifying a frequency selection matrix for selecting a matrix for use in filtering from among discrete Fourier transform matrixes; a step for identifying an inverse discrete Fourier transform matrix for transforming frequency data into output time-series data on a time axis; a step for identifying a delay amount selection matrix for selecting a matrix for use in filtering from among inverse discrete Fourier transform matrixes; and a step for generating a digital filter matrix.
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
Rental of audio equipment, video cameras and audiovisual equipment; rental of office space; rental of meeting rooms; rental of facilities for showing movies, shows, plays, music performances and educational training; rental of facilities for exhibitions; rental of facilities for art exhibits; arranging, conducting and organization of seminars
32.
METHOD FOR DESIGNING DIGITAL FILTER, AND AUDIO SIGNAL PROCESSING SYSTEM
Provided is a design method comprising: a step for identifying the filter coefficient of an FIR filter corresponding to the frequency characteristics of a digital filter to be designed; a step for identifying the arrangement of zero points on a complex plane of a transfer function in which the identified filter coefficient is used; a step for mirror-transforming a zero point among the identified zero points that is located outside the unit circle of the complex plane, so that the zero point is located inside the circumference of the unit circle; and a step for identifying the transfer function of the digital filter on the basis of a polynomial of which the solution is the zero point mirror-transformed to be located inside the circumference of the unit circle.
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
Rental of audio equipment, video cameras and audiovisual equipment; rental of office space; rental of meeting rooms; rental of facilities for showing movies, shows, plays, music performances and educational training; rental of facilities for exhibitions; rental of facilities for art exhibits; arranging, conducting and organization of seminars
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
Rental of audio equipment, video cameras and audiovisual equipment; rental of office space; rental of meeting rooms; rental of facilities for showing movies, shows, plays, music performances and educational training; rental of facilities for exhibitions; rental of facilities for art exhibits; arranging, conducting and organization of seminars in the fields of video and audio content creation and audio recording
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
Rental of audio equipment, video cameras and audiovisual equipment; rental of office space; rental of meeting rooms; rental of facilities for showing movies, shows, plays, music performances and educational training; rental of facilities for exhibitions; rental of facilities for art exhibits; arranging, conducting and organization of seminars
One embodiment provides a microphone device with advanced functionalities. The microphone device comprises one or more microphone units, one or more sensor units, and an automatic control system. The one or more sensor units are configured for capturing contextual information indicative of one or more real-time conditions of an environment of the microphone device. The automatic control system is configured for detecting one or more real-time changes to the environment of the microphone device based on the contextual information, invoking display of a graphical user interface (GUI) comprising information indicative of the one or more real-time changes, and adjusting one or more settings for the microphone device in response to the one or more real-time changes.
An earphone includes a housing that is connected with a nozzle for emitting sound to the outside, a fixed pole that is fixed inside the housing, a diaphragm that is provided so as to divide a space inside the housing into two, and vibrates in accordance with a potential difference generated between the diaphragm and the fixed pole facing each other, a support part that supports the diaphragm such that a portion of the diaphragm is in contact with the fixed pole, and an adjustment hole that is formed so as to penetrate a wall of the housing on a side opposite to the one having the nozzle, from the perspective of the diaphragm, and adjusts a pressure inside the housing. A through-membrane hole penetrating the diaphragm is formed in the portion of the diaphragm.
H04R 1/28 - Supports de transducteurs ou enceintes conçus pour réponse de fréquence spécifiqueEnceintes de transducteurs modifiées au moyen d'impédances mécaniques ou acoustiques, p. ex. résonateur, moyen d'amortissement
The purpose of this electroacoustic transducer device is to shorten the operation time of a volume setting by a user, to reduce the communication amount between the electroacoustic transducer device and a musical sound playback machine, and to prevent malfunctions occurring in the electroacoustic transducer device and the musical sound playback machine. This electroacoustic transducer device 1 is fitted to the ear of a user and includes: an antenna 111 that receives an audio signal; a driver unit 12 that converts the audio signal received by the antenna into audio; a volume control unit 115 that controls the volume of the audio; and an operation unit 13 that receives, from the user, an instruction to change the volume. The volume control unit changes the increase/decrease range of the volume for each operation on the basis of the operation time of the operation unit.
[Problem] To provide a microphone with a simple configuration that reduces noise transmitted from a housing. [Solution] A microphone 1 comprises a microphone unit 20, a unit holding member 30 that holds the microphone unit, a cylindrical grip 40 that accommodates the unit holding member therein, and buffer members 50, 60 that are interposed between the unit holding member and the grip, wherein a plurality of ribs 55, 63a are formed on an outer edge of the buffer member facing an inner wall of the grip.
[Problem] To provide a microphone which has a simple configuration and reduces noise transmitted from a housing. [Solution] This microphone 1 comprises: a microphone unit 20; a unit holding member 30 for holding the microphone unit; a cylindrical grip 40 for accommodating therein the unit holding member; and a buffering member 60 interposed between the unit holding member and the grip, wherein the buffering member is floatingly held in a space S of which at least a portion is demarcated by the grip.
The purpose of the present invention is enable operation of a desired function without causing a user to feel stress when an earphone device is worn in the ears. This earphone device 1 comprises a sound-emitting unit 10 that is worn in user's ears. The sound-emitting unit 10 is provided with: an antenna 171 for receiving an audio signal; a driver unit 16 for driving on the basis of the audio signal received by the antenna; and a battery 18 for storing power to be supplied to the antenna. The battery is charged when the sound-emitting unit is being accommodated in a charger. The sound-emitting unit is in a stopped state when the sound-emitting unit is accommodated in the charger 30, and is in an operating state when the sound-emitting unit is not being accommodated in the charger. Operational modes of the sound-emitting unit in the operating state include a first operational mode and a second operational mode. When the state of the sound-emitting unit has been switched from the stopped state to the operating state, the operational mode of the sound-emitting unit, a prescribed length of time after the switching, is the first operational mode.
G10K 11/178 - Procédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général utilisant des effets d'interférenceMasquage du son par régénération électro-acoustique en opposition de phase des ondes acoustiques originales
09 - Appareils et instruments scientifiques et électriques
18 - Cuir et imitations du cuir
35 - Publicité; Affaires commerciales
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
Apparatus for controlling and power distributing; electric
sockets, plugs and other electric connections; fuses; plug
adaptors; battery chargers; electrical power supplies; noise
filter for wiring or power supply; apparatus for controlling
and power distributing for automobiles; light control device
for facilities for karaoke and their parts and accessories;
stage and studio lighting control device and their parts and
accessories; electrical cells and batteries; batteries for
automobiles; electric wires and cables; audio cables;
speaker cables; headset cables; video cables; microphone
cables; lead wires; electric wires and cables for
automobiles; apparatus for recording, transmission or
reproduction of sound and videos; audio players; camcorders;
equalizers; electric signal amplifier for audio or video;
signal amplifiers; headphone amplifiers; apparatus for
installing audio systems (term considered too vague by the
International Bureau -rule 13 (2) (b) of the Regulations);
insulated electrical connectors and telecommunications
cables for installing audio equipments; transmitters and
receivers for optical radio transmission; headsets and their
parts and accessories; headphones and their parts and
accessories; earphones and their parts and accessories;
cases for earphones; cases for headphones; microphones and
their parts and accessories; covers for microphones;
microphone protectors; cases for microphones; microphone
windscreens; microphone holders and their parts; booms for
microphones; microphone stands; speakers and their parts and
accessories; carrier bags for speakers; speaker mounting
brackets; stands for speakers; radio transmitters and radio
receivers and their parts and accessories; aerials; cable
transmitters and cable receivers and their parts and
accessories; record players and their parts and accessories;
disk stabilizer; phono equalizers; headshells for phono
cartridges; cleaning apparatus for phonograph records; phono
cartridges for record players; pickups for record players;
tone arms for record players; needles for record players;
record player turntables; parts and accessories for
apparatus for recording, transmission or reproduction of
sound and videos; telecommunication apparatus for conference
system and their parts and accessories; telecommunication
controlling equipment for conference system;
telecommunication apparatus for conference system; voting
machines for conference system; telecommunication
controlling equipment for translators; loudspeakers and
their parts and accessories; electroacoustic transducers;
parts and accessories for telecommunication machines and
apparatus; electric signal amplifier for audio and video;
audio, video selectors; audio, video dividers; audio mixers;
video mixers; video processors; sound signal converters;
sound signal transports; sound signal transmitters;
telecommunications apparatus for automobiles; audio
equipments for automobiles with sound-absorbing properties;
audio equipments for automobiles with sound insulation;
audio equipments for automobiles with heat sensors and
regulators; audio equipments for automobiles with vibration
damping properties; soundproof audio equipments for
automobiles; waterproof audio equipments for automobiles;
electric and electronic effects units for audiovisual
equipment; electronic data processing machines, apparatus
and their parts; noise filters for telecommunication
machines or for electronic machines; electronic audiovisual
and telecommunication machines for automobiles and their
parts; computer software for recording, transmission and
reproduction of sound and videos; telecommunication machines
and apparatus; computer software for editing of sound and
videos; computer software programs; application software;
downloadable computer software; application software for
audio apparatus; computer software for controlling the
operation of audio and video devices; virtual reality
headsets; personal digital assistants; downloadable
electronic game programs; game programs for arcade video
game machines; game programs for home video game machines. Bags; pouches. Advertising and publicity services; retail services or
wholesale services for electrical machinery and apparatus;
retail services or wholesale services for clothing; retail
services or wholesale services for footwear, other than
special footwear for sports; retail services or wholesale
services for bags and pouches; retail services or wholesale
services for personal articles; retail services or wholesale
services for food and beverages; retail services or
wholesale services for kitchen equipment, cleaning tools and
washing utensils; retail services or wholesale services for
cosmetics, toiletries, dentifrices, soaps and detergents;
retail services or wholesale services for flowers [natural]
and trees; retail services or wholesale services for paper
and stationery; retail services or wholesale services for
sports goods; retail services or wholesale services for
toys, dolls, game machines and apparatus; retail services or
wholesale services for musical instruments and records;
retail services or wholesale services for photographic
machines and apparatus and photographic supplies; retail
services or wholesale services for clocks, watches and
spectacles [eyeglasses and goggles]; retail services or
wholesale services for tobacco and smokers' articles; retail
services or wholesale services for semi-wrought precious
stones and their imitations; arranging and conducting of
flea markets. Arranging, conducting and organization of seminars;
arranging, conducting and organization of workshops;
organization of entertainment events excluding movies,
shows, plays, musical performances, sports, horse races,
bicycle races, boat races and auto races.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Electric wires and cables; microphone cables; apparatus for recording, transmission or reproduction of sound and videos; equalizers; electric signal amplifier for audio and video; signal amplifiers; microphone amplifiers; apparatus for audio systems; insulator for audio equipments; transmitters and receivers for optical radio transmission; microphones and their parts and accessories; covers for microphones; microphone protectors; cases for microphones; microphone windscreens; microphone holders and their parts; booms for microphones; microphone stands; radio transmitters and radio receivers and their parts and accessories; cable transmitters and cable receivers and their parts and accessories; parts and accessories for apparatus for recording, transmission or reproduction of sound and videos; telecommunication apparatus for conference system and their parts and accessories; telecommunication controling equipment for conference system; telecommunication apparatus for conference system; loudspeakers and their parts and accessories; audio and video selectors; audio and video dividers; audio mixers; sound signal converters; sound signal transports; sound signal transmitters; electric and electronic effects units for audiovisual equipment; computer software for recording, transmission, reproduction and editing of sound and videos; application software for audio apparatus; computer software for controlling the operation of audio and video devices.
[Problem] To provide an earphone that offers high sound quality while reducing pressure on a diaphragm. [Solution] An earphone 1 comprises: a diaphragm 6; a driver unit 5 with the diaphragm located on the front surface thereof; a unit cap 2 that accommodates the driver unit; and an acoustic tube 3 that is coupled to the front surface of the unit cap and forms a front-side air chamber on the front surface of the diaphragm. The unit cap comprises: a unit holding wall 21 that holds the side wall of the driver unit; and a communication hole 22 that provides communication, in front of the unit holding wall, between the inside and the outside of the unit holding wall, and between the front surface and the back surface of the unit cap. The central axis of a unit accommodation part 21a defined by the unit holding wall is offset from the central axis of the unit cap.
09 - Appareils et instruments scientifiques et électriques
Produits et services
Microphones, microphone cables, microphone mounts and stands, microphone receivers and transmitters, microphone power supplies; microphone components, namely, electrical connectors; microphone signal control units; microphone mixer; microphone mount; microphone filter; wireless headphones and headsets; wireless microphones; microphone accessories, namely, mixers, switches, filters, attenuators and limiters; earphones; headphones; phonograph cartridges and styli; audio mixers and record players and turntables; wireless receivers and headsets; wireless transmitters; and record care accessories
09 - Appareils et instruments scientifiques et électriques
Produits et services
Microphones, microphone cables, microphone mounts and stands, microphone receivers and transmitters, microphone power supplies; microphone components, namely, electrical connectors; microphone signal control units; microphone mixer; microphone mount; microphone filter; wireless headphones and headsets; wireless microphones; microphone accessories, namely, mixers, switches, filters, attenuators and limiters; earphones; headphones; phonograph cartridges and styli; audio mixers and record players and turntables; wireless receivers and headsets; wireless transmitters; and record care accessories
This earphone comprises: a housing 11 to which a guide tube part 15 for emitting sound to the outside is coupled; fixed poles 17 fixed to the inside of the housing 11; a vibration membrane 21 which is provided to bisect the space inside the housing 11 and vibrates in response to a potential difference generated between the facing fixed poles 17; a support member 27 which supports the vibration membrane 21 so that a portion of the vibration membrane 21 is in contact with the fixed poles 17; and an adjustment hole part 14 which is formed in the housing 11 so as to pass through a wall on a side opposite to the guide tube part 15 when viewed from the vibration membrane 21, and which is for adjusting the pressure inside the housing 11. A membrane-penetrating hole 22 which passes through the vibration membrane 21 is formed in the portion of the vibration membrane 21.
This electroacoustic converter comprises: a diaphragm 16 that includes a main dome 22 disposed at the center and a sub-dome 24 that annularly surrounds the main dome; a support portion that fixedly supports an outer periphery 25 of the sub-dome 24; and a voice coil that is provided on the back surface side of the diaphragm 16 to vibrate the diaphragm. The sub-dome 24 includes a plurality of first apexes T1 and a plurality of second apexes T2 that differ in at least one of distance from the outer periphery 25 in the radial direction and position in the height direction, and that are positioned at predetermined intervals in the circumferential direction. The plurality of first apexes T1 and second apexes T2 are positioned on an annular curved surface that is continuous in the circumferential direction.
A drip assist tool to be placed on top of a dripper and help pour hot water into the dripper includes a tubular housing portion that can accommodate the hot water, and a plurality of pouring outlets (a first pouring outlet and a second pouring outlet) formed on the central part of a bottom portion of the housing portion. The housing portion can be collapsed flat.
Provided is an earphone device capable of solving problems likely to occur because of physical separation of left and right sound emitting units. An earphone device 1 comprises: a first sound emitting unit 10 to be fitted to one ear of a user; and a second sound emitting unit 20 to be fitted to the other ear of the user. The first sound emitting unit is provided with a first antenna 141, a first driver unit 13, a first storage battery 16, and a first magnet 17 used for bonding with the second sound emitting unit. The second sound emitting unit is provided with a second antenna 241, a second driver unit 23, a second storage battery 26, and a second magnet 27 used for bonding with the first sound emitting unit. The first sound emitting unit can be physically separated from the second sound emitting unit. The first sound emitting unit is connected to the second sound emitting unit by means of magnetic force between the first and second magnets.
09 - Appareils et instruments scientifiques et électriques
35 - Publicité; Affaires commerciales
41 - Éducation, divertissements, activités sportives et culturelles
Produits et services
Apparatus for controlling electric power and electric power distributing boxes; electric sockets, plugs and other electric connections; fuses; plug adaptors; battery chargers; electrical power supplies; noise filter for wiring or power supply; apparatus for controlling electric power and electric power distributing apparatus for automobiles; light control device for facilities for karaoke and their parts and accessories; stage and studio lighting control device and their parts and accessories; electrical cells and batteries; batteries for automobiles; electric wires and cables; audio cables; audio speaker cables; headset cables; video cables; microphone cables; lead wires; electric wires and cables for automobiles; apparatus for recording, transmission or reproduction of sound and videos; audio players; camcorders; audio equalizers; electric signal amplifier for audio or video; monitor signal amplifiers; headphone amplifiers; apparatus for installing audio systems, namely, audio transmitter units; insulated electrical connectors and telecommunications cables for installing audio equipments; transmitters and receivers for optical radio transmission; headsets and their parts and accessories; headphones and their parts and accessories; earphones and their parts and accessories; cases for earphones; cases for headphones; microphones and their parts and accessories; covers for microphones; microphone protectors; cases for microphones; microphone windscreens; microphone holders and their parts; booms for microphones; microphone stands; speakers and their parts and accessories; carrier bags for speakers; audio speaker mounting brackets; stands for audio speakers; radio transmitters and radio receivers and their parts and accessories; aerials; cable transmitters and cable receivers and their parts and accessories; record players and their parts and accessories; compact disk stabilizer; phono equalizers; headshells for cartridges for record player turntables; cleaning apparatus for phonograph records comprised primarily of replacement stylus needles and also including cleaning solutions and brushes; phono cartridges for record players; pickups for record players; tone arms for record players; needles for record players; record player turntables; parts and accessories for apparatus for recording, transmission or reproduction of sound and videos; telecommunication apparatus for conference system and their parts and accessories, namely, smartphones, phones, tablets, webcams, switches, transmitters, cables, video monitors, microphones, audio speakers, control panels and voting machines; telecommunication controlling equipment for conference system, namely, smartphones, phones, tablets, webcams, switches, transmitters, cables, video monitors, microphones, audio speakers, control panels and voting machines; telecommunication apparatus for conference system, namely, smartphones, phones, tablets, webcams, switches, transmitters, cables, video monitors, microphones, audio speakers, control panels and voting machines; voting machines for conference system; telecommunication controlling equipment for translators, namely, smartphones, phones, tablets, webcams, switches, transmitters, cables, video monitors, microphones, audio speakers, control panels and voting machines; loudspeakers and their parts and accessories; electroacoustic transducers; parts and accessories for telecommunication machines and apparatus, namely, telecommunication transmitters; electric signal amplifier for audio and video; audio, video selectors; audio, video dividers; audio mixers; video mixers; video processors; sound signal converters; sound signal transports; sound signal transmitters; telecommunications apparatus for automobiles, namely, telecommunication transmitters; audio equipments for automobiles with sound-absorbing properties, namely, speakers for sound-absorbing, baffles for sound-absorbing, sheets for sound-absorbing, panels for sound-absorbing, coverings for sound-absorbing, and sound absorbers; audio equipments for automobiles with sound insulation, namely, speakers for sound insulation, baffles for sound insulation, sheets for sound insulation, panels for sound insulation, coverings for sound insulation and sound insulators; audio equipments for automobiles with heat sensors and regulators, namely, speakers for heat insulation, baffles for heat insulation, sheets for heat insulation, panels for heat insulation, coverings for heat insulation, and heat insulators; audio equipments for automobiles with vibration damping properties, namely, speakers for vibration damping, baffles for vibration damping, sheets for vibration damping, panels for vibration damping, coverings for vibration damping and vibration damping materials; soundproof audio equipments for automobiles, namely, speakers for soundproofing, baffles for soundproofing, sheets for soundproofing, panels for soundproofing, coverings for soundproofing and soundproofing materials; waterproof audio equipments for automobiles, namely, speakers for waterproofing, baffles for waterproofing, sheets for waterproofing, panels for waterproofing, coverings for waterproofing and waterproofing materials; electric and electronic effects units for audiovisual equipment; electronic data processing machines, apparatus and their parts; noise filters for telecommunication machines or for electronic machines; electronic audiovisual and telecommunication machines for automobiles and their parts, namely, audio transmitter units and their parts therefor; downloadable computer software for recording, transmission and reproduction of sound and videos; telecommunication machines and apparatus, namely telecommunications multiplexers; downloadable computer software for editing of sound and videos; downloadable computer software programs for recording, transmission, reproduction and editing of sound and videos; downloadable application software for mobile phones for recording, transmission, reproduction and editing of sound and videos; downloadable computer software for recording, transmission, reproduction and editing of sound and videos; downloadable computer application software for controlling audio apparatus; downloadable computer software for controlling the operation of audio and video devices; virtual reality headsets; personal digital assistants; downloadable electronic game programs; downloadable game programs for arcade video game machines; downloadable game programs for home video game machines Advertising and publicity services; retail store services or wholesale store services featuring electrical machinery and apparatus; arranging and conducting of flea markets Arranging, conducting and organization of seminars for the field of audio recording, photography, videography, hospitality, fine art, fashion, literature, music, crafts, gardening, and farming; arranging, conducting and organization of workshops for the field of audio recording, photography, videography, hospitality, fine art, fashion, literature, music, crafts, gardening, and farming; organization of entertainment events excluding movies, shows, plays, musical performances, sports, horse races, bicycle races, boat races and auto races, namely, performances in contests, magic shows, circuses and dancing
84.
FOOD SHAPING DEVICE, CONTROL METHOD OF FOOD SHAPING DEVICE AND CONTROL PROGRAM OF FOOD SHAPING DEVICE
[Problem] To securely cut plate-shaped cooked rice. [Solution] A food shaping device 1 for giving a plate-shaped product with a preset length, said food shaping device being provided with a shaping part 4 for shaping cooked rice supplied from a hopper 2 into a plate shape, and a cutting part 5 for cutting the shaped cooked rice by moving a cutter 52 back and forth at the discharge port of the cooked rice having been shaped by the shaping part, wherein the cutting part presses the cutter multiple times on the same position of each plate-shaped product.
A drip assistor for pouring hot water into a dripper, the drip assistor being mounted on the dripper, comprises a tubular accommodation part 30 in which the hot water can be accommodated, and a plurality of pouring outlets (first pouring outlet 52 and second pouring outlet 54) that are formed at the center of a bottom section 34 of the accommodation part 30. The accommodation part 30 is configured to be collapsible to a flat state.
A dripper set 1 comprises a cylindrical dripper 10 having an opening at the top, and a drip assist 20, for pouring hot water into the dripper 10, mounted so as to cover a top opening 11a of the dripper 10. The drip assist 20 has a cylindrical container 30 which can contain hot water, and a pouring section 50 which is located on the middle side of a bottom section of the container 30 and in which a plurality of pouring holes are formed, the pouring section 50 being located below the top end of the dripper 10.
This electroacoustic transducer 100 has a diaphragm 10 and a magnetic circuit part 20. The magnetic circuit part 20 includes a permanent magnet 23 that is magnetized in the thickness direction, a pole piece 25 that is magnetically connected to one surface of the permanent magnet 23 in the thickness direction, and a yoke body 21 that includes a bottom portion 21a on which the permanent magnet 23 is disposed, and a peripheral wall portion 21b that extends from the periphery of the bottom portion 21a in a direction away from the bottom portion 21a and that is magnetically connected to the other surface of the permanent magnet 23 in the thickness direction on the bottom portion 21a. At least one of the pole piece 25 and the bottom portion 21a of the yoke body 21 is a laminate in which a plurality of magnetic metal plates are stacked in the thickness direction of the permanent magnet with electrical insulation between each plate.
Provided is to achieve high call quality and improve wearability.
Provided is to achieve high call quality and improve wearability.
A wireless earphone 1 includes a driver unit (50), a first microphone (80), a second microphone (90), and a housing (10) that accommodates the driver unit (50), the first microphone (80), and the second microphone (90). The housing (10) includes a first accommodating portion (13) that accommodates the first microphone (80), a second accommodating portion (14) that accommodates the second microphone (90), and a main body (11) that is connected to each of the first accommodating portion (13) and the second accommodating portion (14). The first accommodating portion (13) is projectingly provided from the main body (11). The second accommodating portion (14) is projectingly provided from the main body (11) in a direction different from a projecting direction of the first accommodating portion (13).
H04R 1/40 - Dispositions pour obtenir la fréquence désirée ou les caractéristiques directionnelles pour obtenir la caractéristique directionnelle désirée uniquement en combinant plusieurs transducteurs identiques
G10K 11/178 - Procédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général utilisant des effets d'interférenceMasquage du son par régénération électro-acoustique en opposition de phase des ondes acoustiques originales
[Problem] To provide an electroacoustic transducer which is configured to generate a bone conduction vibration, for which noise is reduced, and which has high sound quality. [Solution] An electroacoustic transducer 1 transmits vibrations to a bone, and comprises: a tubular mainframe 10; a vibration unit 50 that is disposed inward of the mainframe and vibrates in response to an inputted signal; a first member 20 that abuts a first end of the vibration unit in a vibration direction and a first end 10a of the mainframe; and a second member 60 that is coupled to a second end of the vibration unit and a second end 10b of the mainframe, with the vibration unit vibrating in a direction along the axial direction of the mainframe.
The sound collection system includes: a first beamformer that outputs a first signal obtained by emphasizing sound coming from a direction within a first range, among sound arriving at a plurality of microphones, more than sound coming from other directions; a second beamformer that outputs a second signal obtained by emphasizing sound coming from a direction within a second range more than sound coming from other directions; a sound source direction detecting part that detects a sound source direction generating sound arriving at the plurality of microphones; and a directivity control part that causes the second beamformer to output the second signal if it is determined that a change angle per unit time of the direction of the sound source detected by the sound source direction detecting part is equal to or greater than a threshold while the first beamformer is outputting the first signal.
This electroacoustic converter 2 comprises a casing 20, a partition member 30 disposed inside the casing 20, a first electroacoustic conversion unit 100, and a second electroacoustic conversion unit 200. The first electroacoustic conversion unit 100 has a fixed electrode 101, an oscillation film 105 that is disposed facing the fixed electrode 101 and that oscillates in accordance with a difference in potential generated with respect to the fixed electrode on the basis of an electrical signal, and a support member 107 that supports a partial region of the oscillation film 105 and that brings part of the oscillation film 105 into contact with the fixed electrode 101. The first electroacoustic conversion unit 100 and the second electroacoustic conversion unit 200 are disposed facing one another with the partition member 30 sandwiched therebetween such that a sound-emitting part 100a and a sound-emitting part 200a are inserted into an acoustic outlet 2a. The partition member 30 supports the support member 107 and a support member 207.
H04R 1/40 - Dispositions pour obtenir la fréquence désirée ou les caractéristiques directionnelles pour obtenir la caractéristique directionnelle désirée uniquement en combinant plusieurs transducteurs identiques
H04R 7/24 - Dispositions pour monter ou pour tendre des membranes ou des cônes pour tendre par des moyens agissant directement sur la partie libre de la membrane ou du cône
