Media is selected for video playback through a first device and audio playback through one or more separate devices connected through a wireless network. Different techniques for synchronizing the audio and video can be selected based on one or more factors to improve media playback.
H04N 21/43 - Traitement de contenu ou données additionnelles, p. ex. démultiplexage de données additionnelles d'un flux vidéo numériqueOpérations élémentaires de client, p. ex. surveillance du réseau domestique ou synchronisation de l'horloge du décodeurIntergiciel de client
H04N 21/41 - Structure de clientStructure de périphérique de client
H04N 21/4363 - Adaptation du flux vidéo à un réseau local spécifique, p. ex. un réseau Bluetooth®
H04N 21/44 - Traitement de flux élémentaires vidéo, p. ex. raccordement d'un clip vidéo récupéré d'un stockage local avec un flux vidéo en entrée ou rendu de scènes selon des graphes de scène du flux vidéo codé
H04N 21/439 - Traitement de flux audio élémentaires
Embodiments of systems and methods are described for generating layered audio such that computing devices can request a variable amount of data based on criteria such as their available bandwidth, device capability, or user selection. A base layer and one or more enhancement layers that incrementally enhance the previous layers may be generated. A computing device may retrieve the base layer and/or one or more enhancement layers, adjusting, in real-time or near real-time, which layers are retrieved based on fluctuations in the available bandwidth among other possible criteria.
G10L 19/00 - Techniques d'analyse ou de synthèse de la parole ou des signaux audio pour la réduction de la redondance, p. ex. dans les vocodeursCodage ou décodage de la parole ou des signaux audio utilisant les modèles source-filtre ou l’analyse psychoacoustique
H03M 7/30 - CompressionExpansionÉlimination de données inutiles, p. ex. réduction de redondance
4.
SYSTEM AND METHODS FOR PROCESSING STEREO AUDIO CONTENT
A system can include a hardware processor that can receive left and right audio signals and process the left and right audio signals to generate three or more processed audio signals. The three or more processed audio signals can include a left audio signal, a right audio signal, and a center audio signal. The processor can also filter each of the left and right audio signals with one or more first virtualization filters to produce filtered left and right signals. The processor can also filter a portion of the center audio signal with a second virtualization filter to produce a filtered center signal. Further, the processor can combine the filtered left signal, filtered right signal, and filtered center signal to produce left and right output signals and output the filtered left and right output signals.
H04S 5/00 - Systèmes pseudo-stéréophoniques, p. ex. dans lesquels les signaux d'un canal supplémentaire sont dérivés du signal monophonique par déphasage, retardement ou réverbération
H04S 3/00 - Systèmes utilisant plus de deux canaux, p. ex. systèmes quadriphoniques
H04S 3/02 - Systèmes utilisant plus de deux canaux, p. ex. systèmes quadriphoniques du type matriciel, c.-à-d. dans lesquels les signaux d'entrée sont combinés algébriquement, p. ex. après avoir été déphasés les uns par rapport aux autres
5.
OBJECT-BASED AUDIO SYSTEM USING VECTOR BASE AMPLITUDE PANNING
Methods and systems of reproducing object-based audio are disclosed. In some embodiments, vector base amplitude panning (VBAP) is used for playing back an object's audio. Using the positioning of sound reproduction devices and object's location information, rendering can determine which sound reproduction devices are used for playing back the object's audio. For example, a triangle in which the object is positioned at a given time can be identified. The triangle can have sound reproduction devices as vertices, and the object's audio can be rendered on the sound reproduction devices corresponding to the vertices of the triangle. In some embodiments, ambiguities associated with VBAP-based rendering are identified and resolved.
A method of adjusting a loudness of an audio signal in real time may include receiving an electronic audio signal and dividing the audio signal into a plurality of frames. Processing of the frames may be performed in real time. The processing may include measuring initial loudness values for blocks of samples in a frame to produce a plurality of initial loudness values, and computing a weighted average of at least some of the initial loudness values. The weights may be selected based on one or more of the recency of the initial loudness values, variation of the initial loudness values, and estimated information content of the audio signal. The processing may further include selectively discarding at least some of the loudness values that reach an adaptive loudness threshold. Weights can be adjusted based on the variation of the loudness values of the audio signal.
H03G 3/32 - Commande automatique dans des amplificateurs comportant des dispositifs semi-conducteurs le réglage dépendant du niveau de bruit ambiant ou du niveau sonore ambiant
H03G 3/30 - Commande automatique dans des amplificateurs comportant des dispositifs semi-conducteurs
H04S 7/00 - Dispositions pour l'indicationDispositions pour la commande, p. ex. pour la commande de l'équilibrage
A bass enhancement system can provide an enhanced bass effect for speakers, including relatively small speakers. The bass enhancement system can apply one or more bass enhancements to an input audio signal. For example, the bass enhancement system can exploit how the human ear processes overtones and harmonics of low-frequency sounds to create the perception that non-existent (or attenuated) low-frequency sounds are being emitted from a loudspeaker. The bass enhancement system can generate harmonics of at least some low-frequency fundamental frequencies in one embodiment. Playback of at least some harmonics of a low-frequency fundamental frequency can cause a listener to perceive the playback of the low- frequency fundamental frequency. Advantageously, in certain embodiments, the bass enhancement system can generate these harmonics without performing processing-intensive pitch-detection techniques or the like to identify the fundamental frequencies.
An audio adjustment system is provided that can output a user interface customized by the provider of the audio system instead of the electronic device manufacturer. Such an arrangement can save both field engineers and manufacturers a significant amount of time. Advantageously, in certain embodiments, such an audio adjustment system can be provided without knowledge of the electronic device's firmware. Instead, the audio adjustment system can communicate with the electronic device through an existing audio interface in the electronic device to enable a user to control audio enhancement parameters in the electronic device. For instance, the audio adjustment system can control the electronic device via an audio input jack on the electronic device.
H04N 21/485 - Interface pour utilisateurs finaux pour la configuration du client
H04N 5/60 - Circuits de réception pour les signaux du canal son
H04H 20/82 - Systèmes à fils utilisant des signaux non modulés sur une porteuse
H04L 12/28 - Réseaux de données à commutation caractérisés par la configuration des liaisons, p. ex. réseaux locaux [LAN Local Area Networks] ou réseaux étendus [WAN Wide Area Networks]
H04R 3/04 - Circuits pour transducteurs pour corriger la fréquence de réponse
Systems and methods for adaptively processing speech to improve voice intelligibility are described. These systems and methods can adaptively identify and track formant locations, thereby enabling formants to be emphasized as they change. As a result, these systems and methods can improve near-end intelligibility, even in noisy environments. The systems and methods can be implemented in Voice-over IP (VoIP) applications, telephone and/or video conference applications (including on cellular phones, smart phones, and the like), laptop and tablet communications, and the like. The systems and methods can also enhance non-voiced speech, which can include speech generated without the vocal track, such as transient speech.
G10L 21/003 - Changement de la qualité de la voix, p. ex. de la hauteur tonale ou des formants
G10L 21/0316 - Amélioration de l'intelligibilité de la parole, p. ex. réduction de bruit ou annulation d'écho en changeant l’amplitude
G10L 21/0364 - Amélioration de l'intelligibilité de la parole, p. ex. réduction de bruit ou annulation d'écho en changeant l’amplitude pour améliorer l'intelligibilité
G10L 19/07 - Vocodeurs à paires de spectres linéaire [LSP]
G10L 25/15 - Techniques d'analyse de la parole ou de la voix qui ne se limitent pas à un seul des groupes caractérisées par le type de paramètres extraits les paramètres extraits étant des informations sur les formants
An audio system is provided that employs time-frequency analysis and/or synthesis techniques for processing audio obtained from a microphone array. These time- frequency analysis/synthesis techniques can be more robust, provide better spatial resolution, and have less computational complexity than existing adaptive filter implementations. The time-frequency techniques can be implemented for dual microphone arrays or for microphone arrays having more than two microphones. Many different time-frequency techniques may be used in the audio system. As one example, the Gabor transform may be used to analyze time and frequency components of audio signals obtained from the microphone array.
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
11.
SYSTEM FOR DYNAMICALLY CREATING AND RENDERING AUDIO OBJECTS
Embodiments of systems and methods are described for providing backwards compatibility for legacy devices that are unable to natively render non-channel based audio objects. These systems and methods can also be beneficially used to produce a reduced set of audio objects for compatible object-based decoders with low computing resources.
A depth processing system can employ stereo speakers to achieve immersive effects. The depth processing system can advantageously manipulate phase and/or amplitude information to render audio along a listener's median plane, thereby rendering audio along varying depths. In one embodiment, the depth processing system analyzes left and right stereo input signals to infer depth, which may change over time. The depth processing system can then vary the phase and/or amplitude decorrelation between the audio signals over time to enhance the sense of depth already present in the audio signals, thereby creating an immersive depth effect.
A depth processing system can employ stereo speakers to achieve immersive effects. The depth processing system can advantageously manipulate phase and/or amplitude information to render audio along a listener's median plane, thereby rendering audio along varying depths. In one embodiment, the depth processing system analyzes left and right stereo input signals to infer depth, which may change over time. The depth processing system can then vary the phase and/or amplitude decorrelation between the audio signals over time to enhance the sense of depth already present in the audio signals, thereby creating an immersive depth effect.
A stereo widening system and associated signal processing algorithms are described herein that can, in several embodiments, widen a stereo image with fewer processing resources than existing crosstalk cancellation systems. These system and algorithms can advantageously be implemented in a handheld device or other device with speakers placed close together, thereby improving the stereo effect produced with such devices at lower computational cost. However, the systems and algorithms described herein are not limited to handheld devices, but can more generally be implemented in any device with multiple speakers.
09 - Appareils et instruments scientifiques et électriques
Produits et services
APPARATUS FOR USE IN PROCESSING AUDIO ELECTRONIC SIGNALS TO CREATE AN ENHANCED AUDIO IMAGE FROM PLAYBACK OF THE AUDIO SIGNALS THROUGH SPEAKERS; MULTI-CHANNEL SOUND PROCESSORS; INTEGRATED CIRCUITS; VIDEO MONITORS; VIDEO TUNERS; STEREO RECEIVERS AND AMPLIFIERS; [ AUDIO CASSETTE DECKS FOR AUTOMOBILES; ] AUTOMOBILE STEREOS; TELEVISION SETS; PORTABLE STEREOS;[ BOOM BOXES; STEREO PROCESSORS FOR USE IN CINEMAS; VIDEO DISC PLAYBACK AND RECORDING APPARATUS; ] AUDIO PLAYBACK AND RECORDING APPARATUS; HOME AUDIO-VISUAL RECORDING APPARATUS; [ VCRS; DIGITAL VIDEO TAPE PLAYERS; ] SPEAKERS; SPEAKER SYSTEMS CONTAINING A SOUND TRANSDUCER AND AN INTEGRAL AMPLIFIER; CD AND DVD PLAYBACK AND RECORDING DEVICES; CABLE TELEVISION RECEIVERS AND DECODERS; [ REMOTE CONTROL UNITS FOR THESE GOODS; ] COMPUTER PROGRAMS HAVING SOUND GENERATING CAPABILITY; COMPUTER SOFTWARE FOR STREAMING OR DELIVERING AN AUDIO, AUDIO/VIDEO, OR COMPOSITE SIGNAL OVER A GLOBAL COMMUNICATIONS SYSTEM; [ COMPUTER SOFTWARE FOR ENHANCING AN AUDIO IMAGE GENERATED BY SPEAKERS FOR USE IN THE ENTERTAINMENT FIELD; ] COMPUTERS; COMPUTER SOUND PROCESSING CARDS; [ INDUSTRY STANDARD COMPUTER INTERFACE CARDS; AND COMPUTER AUDIO PROCESSING CIRCUITRY ]
09 - Appareils et instruments scientifiques et électriques
Produits et services
(1) Stereos, car stereos, portable stereos, boomboxes, radios, CD (compact disc) players and recorders, DVD (digital versatile disc) players and recorders, video cassette players and recorders, mini disc players and recorders, laser disc players and recorders, video disc players and recorders, speakers, computer speakers, computer programs for processing sound, televisions; multi-channel sound processors; integrated circuits; video monitors, video tuners; stereo receivers and amplifiers; tape decks; stereo processors for use in cinemas; digital video tape players; speaker system containing a sound transducer and an integral amplifier; cable television receivers and decoders; remote control units for these goods; computer software for enhancing an audio image generated by speakers; computers; computer sound processing cards; industry standard computer interface cards; and computer audio processing circuitry.
09 - Appareils et instruments scientifiques et électriques
Produits et services
(1) Apparatus for use in processing audio electronic signals to create an expanded audio image from playback of the audio signals through speakers; multi-channel sound processors; integrated circuits; video monitors; video tuners; stereo receivers and amplifiers; tape decks; car stereos; televisions; portable stereos; boomboxes; stereo processors for use in cinemas; video disc playback and/or recording apparatus; audio playback and/or recording apparatus; home audio-visual recording apparatus; digital video disc (DVD) players; laser disc players and recorders; VCRs; digital video tape players; speakers; speaker systems containing a sound transducer and an integral amplifier; CD (compact disc) playback and/or recording devices; motion picture projectors; cable television receivers and decoders; remote control units for these goods; computer programs having sound generating capability; computer software for expanding and audio image generated by speakers for use in the entertainment field; computers; computer sound processing cards; industry standard computer interface cards; computer audio processing circuitry; computer hardware, namely, computer diskettes, computer floppy disks, hard discs, cd-rom discs, digital video discs, optical storage discs, and computer solid-state cartridges; audio and/or audio-visual recordings stored on magnetic tape or optical media; audio and/or audio-visual prerecorded media containing entertainment material in the form of the spoken word, music and other sounds, namely, motion picture film, VCR cassette tapes, laser discs, video discs, optical discs, analog or digital audio cassette tapes, and analog or digital video cassette tapes.
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
15 - Instruments de musique
20 - Meubles et produits décoratifs
Produits et services
(1) Stereo sound reproduction equipment for general use and for use in automobiles, namely, amplifiers, receivers, speakers, outdoor speakers, tape decks, compact disc players, motion picture projectors, CD-Rom players, video disc players, televisions, radios, DVD players, computer speakers, audio disc players, portable digital audio decoders, portable digital audio players, boom boxes, computer audio processing circuitry, portable electric keyboard players, pianos and organs, laser disc players, audio and/or audio-visual apparatus for use in cinemas, namely movie projectors, sound processors, video monitors, video tuners and computer audio processing software.
(2) Stereo sound reproduction equipment for general use and for use in automobiles, namely, amplifiers, receivers, speakers, outdoor speakers, tape decks, compact disc players, motion picture projectors, CD-Rom players, video disc players, televisions, radios, DVD players, computer speakers, audio disc players, portable digital audio decoders, portable digital audio players, boom boxes, computer audio processing circuitry, portable electric keyboard players and electronic musical instruments, namely guitars, pianos and organs, laser disc players, audio and/or audio-visual apparatus for use in cinemas, namely movie projectors, sound processors, video monitors, video tuners and computer audio processing software.
09 - Appareils et instruments scientifiques et électriques
16 - Papier, carton et produits en ces matières
18 - Cuir et imitations du cuir
Produits et services
(1) Sound recording and reproduction machines and stereo units, namely, professional and amateur amplifiers; tuners; speakers; tape decks; car stereos and portable stereos; motion picture projectors; CD-Rom playback and/or recording machines; video disc playback and recorders; home video recorders; television; karaoke machines; compact disc players and recorders; laser disc players; computer sound processing cards; computer PCMCIA cards; audio and/or audio-visual systems for cinemas; computer data storage devices namely, diskettes, floppy disks, solid-state cartridges, video games cartridges and/or tapes, hard discs, CD-Rom discs, magnetic tape and optical media; audio recordings; audio-visual recordings; audio and/or audio-visual storage media, namely, compact discs, mini-discs, laser discs, optical discs, video discs, analog or digital audio tapes, video cassette tapes for professional or home use, VCR cassette tapes, motion picture film.
09 - Appareils et instruments scientifiques et électriques
Produits et services
computer software for expanding an audio image generated by a pair of speakers for use in the entertainment field; computer hardware, namely, [ diskettes, floppy disks, hard disks, magnetic tape, ] CD ROM discs, [ mini-discs, ] optical storage discs, [ solid state cartridges; ] audio recordings and audio-visual recordings stored on [ magnetic tape or ] optical storage discs containing entertainment material; audio hardware, namely, compact discs, [ mini-discs, laserdiscs, cassette tapes, ] digital audio tapes, computer discs and CD ROM discs, video discs, [ analog or digital video cassette tapes for professional or home use, ] and motion picture film for use in theaters
09 - Appareils et instruments scientifiques et électriques
Produits et services
computer software for expanding an audio image generated by a pair of speakers for use in the entertainment field; computer hardware, namely, [ diskettes, floppy disks, hard disks, magnetic tape, ] CD ROM discs, [ mini-discs, ] optical storage discs, [ solid state cartridges; ] audio recordings and audio-visual recordings stored on [ magnetic tape or ] optical storage discs containing entertainment material; audio hardware, namely, compact discs, [ mini-discs, laserdiscs, cassette tapes, ] digital audio tapes, computer discs and CD ROM discs, video discs [, analog or digital video cassette tapes for professional or home use, ] and motion picture film for use in theaters
