Abrégé

A sampler module divides an audio signal into a series of sequential samples. A signal quality detector module identifies, over a plurality of samples at an outset of the audio signal, a spectral variance of a first range of frequencies of the audio signal below a predetermined threshold frequency as being consistently greater than a spectral variance of a second range of frequencies of the audio signal above the predetermined threshold frequency and determines a signal treatment indication responsive to the identification. A signal enhancer module sequentially receives and analyzes one or more sample components of the audio signal to identify lost parts of the audio signal in the one or more sample components of respective sequential samples, and generates, in accordance with the signal treatment indication, a corresponding signal treatment for each of the one or more sample components of respective sequential samples having a corresponding identified lost part.

Classes IPC  ?

• G10L 19/02 - Techniques d'analyse ou de synthèse de la parole ou des signaux audio pour la réduction de la redondance, p.ex. dans les vocodeurs; Codage ou décodage de la parole ou des signaux audio utilisant les modèles source-filtre ou l’analyse psychoacoustique utilisant l'analyse spectrale, p.ex. vocodeurs à transformée ou vocodeurs à sous-bandes
• G10L 19/26 - Pré-filtrage ou post-filtrage
• G10L 21/04 - Compression ou expansion temporelles

Abrégé

A technique for modifying an affect of a voice. The technique includes determining an emotional state associated with a person, and modifying one or more acoustic characteristics of a voice sample acquired from the person based on the emotional state to alter an affect associated with the voice sample. The technique further includes generating a second voice sample based on the one or more acoustic characteristics that have been modified, and transmitting the second voice sample.

Classes IPC  ?

• G10L 13/033 - Procédés d'élaboration de parole synthétique; Synthétiseurs de parole Édition de voix, p.ex. transformation de la voix du synthétiseur
• G10L 15/25 - Reconnaissance de la parole utilisant des caractéristiques non acoustiques utilisant la position des lèvres, le mouvement des lèvres ou l’analyse du visage
• G10L 25/63 - Techniques d'analyses de la parole ou de la voix qui ne se limitent pas à un seul des groupes spécialement adaptées pour un usage particulier pour comparaison ou différentiation pour estimer un état émotionnel

Abrégé

A system or method for controlling speaker acoustic output in a multi-speaker audio system having multiple listening zones include substantially simultaneously adjusting gain and at least one additional parameter, such as filtering and/or other signal processing parameters of at least a first speaker relative to at least a second speaker in response to a change in balance and/or fade settings of the audio system across a range of balance and fade settings except for a maximum or minimum setting, and muting at least one speaker in response to the maximum or minimum balance or fade setting.

Classes IPC  ?

• H04S 7/00 - Dispositions pour l'indication; Dispositions pour la commande, p.ex. pour la commande de l'équilibrage

Abrégé

Various embodiments relate to outputting literary content on a user device. Literary content data stored on a remote computer system, which may be segmented into multiple segments for download, may be downloaded on the user device. A portion of the multiple segments of the literary content data may be received in response to a user request for the literary content. The portion of the multiple segments may be stored in memory of the user device. At least a portion of the remaining segments on the remote system may be downloaded upon occurrence of an event. Additionally, select segments of the stored segments may be removed from memory. A user selected segment may be output at the user device.

Classes IPC  ?

• G16Z 99/00 - Matière non prévue dans les autres groupes principaux de la présente sous-classe
• H04H 60/76 - Dispositions caractérisées par des systèmes de transmission autres que ceux utilisés pour la radiodiffusion, p.ex. Internet
• H04W 84/18 - Réseaux auto-organisés, p.ex. réseaux ad hoc ou réseaux de détection
• H04L 12/16 - Dispositions pour la fourniture de services particuliers aux abonnés

Abrégé

A listener system, or listener, may be used with an Ethernet Audio-Video Bridging ("AVB") network. The listener may include various components, such as an upper layer application and a stream reservation protocol stack. The upper layer application and stream reservation protocol stack may be in communication with each other. The stream reservation protocol stack may receive stream advertisements on or across the Ethernet AVB network. The stream reservation protocol stack may operate in a sparse mode and may operate in a full mode. When operating in a sparse mode, the stream reservation protocol stack may transmit one subset of the received stream advertisements to the upper layer application, and may not transmit another subset of the received stream advertisements to the upper layer application.

Classes IPC  ?

• H04N 21/4363 - Adaptation du flux vidéo à un réseau local spécifique, p.ex. un réseau IEEE 1394 ou Bluetooth® 
• H04N 21/2668 - Création d'un canal pour un groupe dédié d'utilisateurs finaux, p.ex. en insérant des publicités ciblées dans un flux vidéo en fonction des profils des utilisateurs finaux

Abrégé

An amplifier system for a power converter includes at least a first switching device and a second switching device formed in an integrated circuit in a substrate of a semiconductor. The first and second switching devices may be formed in a half bridge configuration and may be cooperatively switchable to generate an amplified output signal on an output node of the semiconductor. A resistor and a capacitor may be coupled in parallel between a power supply input node and a substrate node included in the semiconductor. The capacitor may be selectively charged to a de-biasing voltage during a switching cycle of the first and second switching devices to reverse bias a parasitic switching device appearing in the integrated circuit.

Classes IPC  ?

• H03F 1/26 - Modifications des amplificateurs pour réduire l'influence du bruit provoqué par les éléments amplificateurs
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques
• H03F 3/04 - Amplificateurs comportant comme éléments d'amplification uniquement des tubes à décharge ou uniquement des dispositifs à semi-conducteurs comportant uniquement des dispositifs à semi-conducteurs
• H04R 3/00 - Circuits pour transducteurs

Abrégé

Methods and systems are disclosed that are capable of automatically interfacing with Internet-based social networks for safely providing friends of a mobile user with location updates. In particular, a system and method are provided for automatically posting user-location information to a social network. A system interface receives user data including a location update activation indicator and location update conditions. A navigation engine obtains information associated with the current location of the mobile user. A social network client module of the system is adapted to determine that the location activation indicator is active and to determine that a location update condition is met. A communications interface automatically posts a location update to the social network if the social network client determines that at least one location update condition is met.

Classes IPC  ?

• H04W 8/18 - Traitement de données utilisateur ou abonné, p.ex. services faisant l'objet d'un abonnement, préférences utilisateur ou profils utilisateur; Transfert de données utilisateur ou abonné
• H04W 4/21 - Signalisation de services; Signalisation de données auxiliaires, c. à d. transmission de données par un canal non destiné au trafic pour applications de réseaux sociaux
• G08G 1/0968 - Systèmes impliquant la transmission d'indications de navigation au véhicule

Abrégé

An approach and device for generation of virtual surround sound with a two-way approach that employs a first order head-related models have been used that resemble interaural time difference localization and inter-aural level difference localization cues in the respective frequency bands while avoiding phantom imaging and excessive coloration.

Classes IPC  ?

• 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

Abrégé

A loudspeaker can provide magnetic flux from polarity-aligned split magnets to drive voice coils and generate sound. The loudspeaker may have reduced stray magnetic fields and a BL curve with symmetric and linear characteristics. The loudspeaker can include a core, split magnets, a magnet housing, a core cap, and a voice coil gap formed between the magnet housing and the core cap. Magnetic flux produced by the split magnets may be combined, directed, and/or concentrated by the core cap and magnet housing within the voice coil gap. At least portions of a voice coil may be positioned within the voice coil gap and a diaphragm may be coupled to the voice coil. A bucking magnet assembly may contain a magnetic flux of the magnet structure to further improve performance. The bucking magnet assembly may include split magnets with an aligned polarity that is opposite the polarity of the magnet structure.

Classes IPC  ?

• H04R 31/00 - Appareils ou procédés spécialement adaptés à la fabrication des transducteurs ou de leurs diaphragmes
• H04R 9/06 - Haut-parleurs

Abrégé

An audio power management system manages operation of audio devices in an audio system. The audio power management system includes a parameter computer, a threshold comparator and a limiter. Audio signals generated with the audio system may be provided to the audio power management system. Based on a measured actual parameter of the audio signal, such as a real-time actual voltage and/or a real-time actual current, the parameter computer can derive estimated operational characteristics of audio devices, such as a loudspeaker included in the audio system. The threshold comparator may use the estimated operational characteristics to develop a threshold and manage operation of one of more devices in the audio system by monitoring the measured actual parameter, and selectively directing the limiter to adjust the audio signal, or another device in the audio system to protect or optimize performance.

Classes IPC  ?

• H04R 3/00 - Circuits pour transducteurs
• H04R 29/00 - Dispositifs de contrôle; Dispositifs de tests

Abrégé

A multichannel compensating audio system includes first and second compensation channels to psychoacoustically minimize deviations in a target response, to psychoacoustically move the physical position of a speaker and/or to psychoacoustically provide a substantially equal magnitude of sound from a plurality of speakers in a plurality of different listening positions. The first compensation channel may include a series connected delay circuit, a level adjuster circuit and a frequency equalizer circuit that generates a first compensated audio signal from a first audio signal. The second compensation channel may include a series connected delay circuit, a level adjuster circuit and a frequency equalizer circuit that generates a second compensated audio signal from a second audio signal. A first summing circuit is configured to receive at least the first audio signal and the second compensated audio signal and generate a first output signal for provision to a first speaker. A second summing circuit is configured to recieve the second audio signal and the first compensated audio signal and generate a second output signal for provision to a second speaker. The first and second output signals may be output by the first and second speakers into a listening space and are acoustically percieved by a listener.

Classes IPC  ?

• H04S 1/00 - Systèmes à deux canaux
• H04S 3/00 - Systèmes utilisant plus de deux canaux, p.ex. systèmes quadriphoniques
• H04S 7/00 - Dispositions pour l'indication; Dispositions pour la commande, p.ex. pour la commande de l'équilibrage

Abrégé

A sound processing system receives an audio input signal that includes at least two different input channels of audio content. The sound processing system dissects the audio input signal to separate sources of audible sound included in the audio input signal into sound source vectors. Separation of the sources of audible sound into sound source vectors may be based on a perceived location of each of the sources of audible sound within a listener perceived sound stage. The sound source vectors may represent spatial slices across the listener perceived sound stage that may be individually and independently processed with the sound processing system. Following processing, the sound source vectors may be selectively assembled to form an audio output signal having output channels used to drive respective loudspeakers. Since the sources of audible sound are separated and independent, the audible sound sources may be included on any one or more of the output channels.

Classes IPC  ?

• 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 7/00 - Dispositions pour l'indication; Dispositions pour la commande, p.ex. pour la commande de l'équilibrage

Abrégé

A multichannel compensating audio system includes first and second compensation channels to psychoacoustically minimize deviations in a target response, to psychoacoustically move the physical position of a speaker and/or to psychoacoustically provide a substantially equal magnitude of sound from a plurality of speakers in a plurality of different listening positions. The first compensation channel may include a series connected delay circuit, a level adjuster circuit and a frequency equalizer circuit that generates a first compensated audio signal from a first audio signal. The second compensation channel may include a series connected delay circuit, a level adjuster circuit and a frequency equalizer circuit that generates a second compensated audio signal from a second audio signal. A first summing circuit is configured to receive at least the first audio signal and the second compensated audio signal and generate a first output signal for provision to a first speaker. A second summing circuit is configured to recieve the second audio signal and the first compensated audio signal and generate a second output signal for provision to a second speaker. The first and second output signals may be output by the first and second speakers into a listening space and are acoustically perceived by a listener.

Classes IPC  ?

• 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
• H04R 3/04 - Circuits pour transducteurs pour corriger la fréquence de réponse
• H04R 5/04 - Circuits
• H04R 9/06 - Haut-parleurs

Abrégé

An automated audio tuning system may op-timize an audio system for power efficiency when perform-ing automated tuning of the audio system to optimize acoustic performance. The system may establish any num-ber of different power efficiency weighting factors to pro-vide a balance between acoustic performance and power ef-ficiency during operation. The power efficiency weighting factors may range from representing optimizing power effi-ciency with constrained optimization of acoustic perfor-mance to optimized acoustic performance with minimized regard for power efficiency. For each of the efficiency weighting factors, the system may generate operational pa-rameters, such as filter parameters, to achieve a target acoustic response while maintaining a determined level of power efficiency.

Classes IPC  ?

• H04S 7/00 - Dispositions pour l'indication; Dispositions pour la commande, p.ex. pour la commande de l'équilibrage

Abrégé

A spectral management system may be used in an audio system to receive and process audio signals having multiple distributed audio channels, such as a right, left, center, right side, left side, right rear and left rear channels. The spectral management system may separate and route a frequency range of audio content included in one or more of the distributed audio channels to other distributed audio channels. The separated and routed frequency range of audio content may be combined with audio content present on the other distributed audio channels to which the separated frequency range of audio content is routed. Separation, routing and combination may include bass audio content routing, mid-bass audio content routing, subwoofer audio content routing and treble audio content routing.

Classes IPC  ?

• H04R 3/14 - Réseaux de recouvrement
• H04S 7/00 - Dispositions pour l'indication; Dispositions pour la commande, p.ex. pour la commande de l'équilibrage
• H04S 3/00 - Systèmes utilisant plus de deux canaux, p.ex. systèmes quadriphoniques

Abrégé

A phase plugs or acoustic lens improves the directional audio performance of a loudspeaker. Application of the improved directional audio performance to a sound system in a listening area improves the performance of the audio system. Configurations of acoustic lens or phase plug which include both symmetrical and asymmetrical features to provide an improved frequency response and directivity are presented. The application of phase plugs or acoustic lens to a loudspeaker may provide improved sound in a listing location, for example, in a vehicle.

Classes IPC  ?

• 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
• H04R 1/36 - 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 en utilisant une seule ouverture de dimensions non supérieures à la longueur d'onde la plus courte

Abrégé

A phase plugs or acoustic lens improves the directional audio performance of a loudspeaker. Application of the improved directional audio performance to a sound system in a listening area improves the performance of the audio system. Configurations of acoustic lens or phase plug which include both symmetrical and asymmetrical features to provide an improved frequency response and directivity are presented. The application of phase plugs or acoustic lens to a loudspeaker may provide improved sound in a listing location, for example, in a vehicle.

Classes IPC  ?

• 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
• H04R 1/36 - 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 en utilisant une seule ouverture de dimensions non supérieures à la longueur d'onde la plus courte

Abrégé

It is disclosed an active control of an unwanted noise sig-nal at a listening site radiated by a noise source using a reference signal that has an amplitude and/or frequency such that it is masked for a human listener at the listen-ing site by the unwanted noise signal and/or a wanted sig-nal present at the listening site in order to adapt for the time-varying secondary path in a real time manner such that a user doesn't feel disturbed by an additional artificial noise source.

Classes IPC  ?

• G10K 11/175 - Procédés ou dispositifs de protection contre le bruit ou les autres ondes acoustiques ou pour amortir ceux-ci, en général utilisant des effets d'interférence; Masquage du son

Abrégé

An audio system installed in a listening space may include a signal processor and a plurality of loudspeakers. The audio system may be tuned with an automated audio tuning system to optimize the sound output of the loudspeakers within the listening space. The automated audio tuning system may provide automated processing to determine at least one of a plurality of settings, such as channel equalization settings, delay settings, gain settings, crossover settings, bass optimization settings and group equalization settings. The settings may be generated by the automated audio tuning system based on an audio response produced by the loudspeakers in the audio system. The automated tuning system may generate simulations of the application of settings to the audio response to optimize tuning.

Classes IPC  ?

• H04R 5/00 - Dispositifs stéréophoniques
• H04R 1/20 - Dispositions pour obtenir la fréquence désirée ou les caractéristiques directionnelles
• H04R 29/00 - Dispositifs de contrôle; Dispositifs de tests

Abrégé

A sound processing system for a vehicle includes a sound processor that is configured to mix at least one real audio input signal to form at least one virtual output signal. At least one audio signal that is available to drive at least one loudspeaker may be formed using the combination of the virtual output signal and the real audio input signal. The virtual output signal may be post processed to form a predetermined frequency range of the audio signal prior to being combined with the real audio input signal. The audio signal may be created by mixing the real audio input signal with the post processed virtual output signal. Alternatively, the audio signal may be formed by mixing the real audio input signal to form a real audio output signal, and then summing the real audio output signal with the post processed virtual output signal. Mixing may be performed with a crossbar mixer included in the sound processor.

Classes IPC  ?

• H04S 1/00 - Systèmes à deux canaux
• B60R 11/02 - Autres aménagements pour tenir ou monter des objets pour postes radio, de télévision, téléphones, ou objets similaires; Disposition de leur commande

Abrégé

A sound processing system for a vehicle includes a sound processor that is configured to mix at least one real audio input signal to form at least one virtual output signal. At least one audio signal that is available to drive at least one loudspeaker may be formed using the combination of the virtual output signal and the real audio input signal. The virtual output signal may be post processed to form a predetermined frequency range of the audio signal prior to being combined with the real audio input signal. The audio signal may be created by mixing the real audio input signal with the post processed virtual output signal. Alternatively, the audio signal may be formed by mixing the real audio input signal to form a real audio output signal, and then summing the real audio output signal with the post processed virtual output signal. Mixing may be performed with a cross bar mixer included in the sound processor.

Classes IPC  ?

• H04R 3/04 - Circuits pour transducteurs pour corriger la fréquence de réponse
• B60R 11/02 - Autres aménagements pour tenir ou monter des objets pour postes radio, de télévision, téléphones, ou objets similaires; Disposition de leur commande

Abrégé

A sound processing system for a vehicle includes a sound processor that is configured to mix at least one real audio input signal to form at least one virtual output signal. At least one audio signal that is available to drive at least one loudspeaker may be formed using the combination of the virtual output signal and the real audio input signal. The virtual output signal may be post processed to form a predetermined frequency range of the audio signal prior to being combined with the real audio input signal. The audio signal may be created by mixing the real audio input signal with the post processed virtual output signal. Alternatively, the audio signal may be formed by mixing the real audio input signal to form a real audio output signal, and then summing the real audio output signal with the post processed virtual output signal. Mixing may be performed with a cross bar mixer included in the sound processor.

Classes IPC  ?

• H04R 3/12 - Circuits pour transducteurs pour distribuer des signaux à plusieurs haut-parleurs
• 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

Abrégé

A audio processing system for a vehicle includes a plurality of loudspeakers positioned to form a single line array. The loudspeaker line array is positionable in a vehicle on a dashboard of the vehicle substantially at the convergence of the dashboard and a window of the vehicle. When the loudspeaker line array is driven by an audio signal, a vertically and horizontally focused and narrowed sound pattern is perceived by for a listener in the vehicle. The sound pattern is the result of the constructive combination of the direct sound impulses and the reflected sound impulses produced by each loudspeaker in the array. Using delay, attenuation and phase adjustment of the audio signal, the sound pattern may be controlled, limited, and directed to one or more locations in the vehicle.

Classes IPC  ?

• H04R 1/32 - Dispositions pour obtenir la fréquence désirée ou les caractéristiques directionnelles pour obtenir la caractéristique directionnelle désirée uniquement
• H04R 1/02 - Boîtiers; Meubles; Montages à l'intérieur de ceux-ci

Abrégé

Sound processing systems have been developed that create a surround effect without quality degradation experienced by known sound processing systems in non-optimum listening environments. The sound processing systems may include matrix decoding systems that manipulate input signals prior to converting them into a number of input signals. These sound processing systems may also alternately include a bass management system that from the input signals preserves the low frequency components of the input signals in separate channels. Both the matrix decoding systems and bass management systems may also produce additional signals. Further, the matrix decoding and bass management systems may be implemented separately or jointly in vehicular sound systems.

Classes IPC  ?

• 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
• H04S 1/00 - Systèmes à deux canaux

Abrégé

Sound processing systems have been developed that create a surround effect without quality degradation experienced by known sound processing systems in non- optimum listening environments. The sound processing systems may include matrix decoding systems that manipulate input signals prior to converting them into a number of output signals so that the output signals are a function of a greater number of input signals. The matrix decoding systems may create input signal pairs based on the input signals. The input signal pairs may be based on various combinations of the input signals. The output signals may be based on the input signal pairs. The matrix decoding systems may also produce additional signals. The matrix decoding systems may also apply delay to the output signals. The matrix decoding systems may also include one or more filters to attenuate frequencies in certain output signals. The matrix decoding systems may be implemented in vehicular sound systems.

Classes IPC  ?

• 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
• H04S 3/00 - Systèmes utilisant plus de deux canaux, p.ex. systèmes quadriphoniques

Abrégé

A sound processing system adaptively mixes active matrix decoding and passive matrix processing of incoming audio signals. Mixed output signals are generated with active matrix decoding where the audio signals are stereo. Mixed output signals are generated with passive matrix processing where the audio signals are monaural. The sound processing system reduces the degree of active matrix decoding in the mixed output signals where the incoming audio signals are stereo and monaural. The sound processing system also generates virtual stereo signals from incoming audio signals having monaural signals. Mixed output signals are generated of the virtual stereo signals using active matrix decoding.

Classes IPC  ?

• H04S 7/00 - Dispositions pour l'indication; Dispositions pour la commande, p.ex. pour la commande de l'équilibrage
• B60R 11/02 - Autres aménagements pour tenir ou monter des objets pour postes radio, de télévision, téléphones, ou objets similaires; Disposition de leur commande

Abrégé

A sound processing system adaptively mixes active matrix decoding and passive matrix processing of incoming audio signals. Mixed output signals are generated with active matrix decoding where the audio signals are stereo. Mixed output signals are generated with passive matrix processing where the audio signals are monaural. The sound processing system reduces the degree of active matrix decoding in the mixed output signals where the incoming audio signals are stereo and monaural. The sound processing system also generates virtual stereo signals from incoming audio signals having monaural signals. Mixed output signals are generated of the virtual stereo signals using active matrix decoding.

Classes IPC  ?

• 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
• B60R 11/00 - Autres aménagements pour tenir ou monter des objets
• H04R 3/12 - Circuits pour transducteurs pour distribuer des signaux à plusieurs haut-parleurs
• 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

Abrégé

A sound processing system reduces speaker distortion at high volume levels by attenuating the filter gain and/or tone of audio and mixed output signals. The sound processing system has one or more filters to attenuate the filter gain and tone in response to the high volume levels. The sound processing system also can attenuate the filter gain and tone in response to a sound pressure level, which may be provided by a microphone.

Classes IPC  ?

• 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
• B60R 11/00 - Autres aménagements pour tenir ou monter des objets
• H04R 3/12 - Circuits pour transducteurs pour distribuer des signaux à plusieurs haut-parleurs
• 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