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Stereo speaker arrangement

Subclass of:

381 - Electrical audio signal processing systems and devices

381001000 - BINAURAL AND STEREOPHONIC

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
381309000 Stereo earphone 108
381303000 Optimization 49
381307000 Surround (i.e., front plus rear or side) 35
381306000 With image presentation means 32
381302000 In vehicle 22
381301000 In furniture or clothing 8
Entries
DocumentTitleDate
20110194712STEREOPHONIC WIDENING - Widening stereophonic response is achieved in sound reproduction systems with at least two loudspeakers. A stereo signal input is accessed, which includes multiple frequency components. The loudspeakers are close to each other. A frequency range of the frequency components is decorrelated, e.g., upon pre-processing the stereo signal. The sound reproduction system's stereophonic response is widened, based on the decorrelation.08-11-2011
20090123007Virtual Sound Source Localization Apparatus - In a virtual sound source localization apparatus, a distance between two loudspeakers and a shortest distance between a line connecting the loudspeakers and a listening position are set beforehand, and a listener operates an operating section to localize a Cch sound source at an approximately center of the loudspeakers, thereby adjusting a sound balance of the loudspeakers. In addition, a controller calculates a difference in distance from the loudspeakers to the listening position, sets a delay amount of delay correctors such that sound emitted from the loudspeakers substantially reaches the listening position simultaneously, and adjusts sound output timing of the loudspeakers. In this way, even though the listening position is changed, the listener can operate the operating section to optimize a virtual surround effect.05-14-2009
20090123006MULTI-MODE SOUND REPRODUCTION SYSTEM AND A CORRESPONDING METHOD THEREOF - There is provided a multi-mode sound reproduction system for reproduction of both stereophonic signals and multi-channel audio signals. The system includes a first pair of speakers positioned on a left portion of a user, the user being at a pre-determined facing, the first pair of speakers comprising a first primary speaker which is stackable with a first secondary speaker; a second pair of speakers positioned on a right portion of the user, the user being at the pre-determined facing, the second pair of speakers comprising a second primary speaker which is stackable with a second secondary speaker. The system may preferably include an arrangement of electronic components for controlling output of audio signals from the first pair and the second pair of speakers. It is preferable that in a first mode with the first and second pair of speakers in an unstacked configuration, the signals do not pass through the arrangement of electronic components prior to output. It is also preferable that in a second mode with each of the first and second pair of speakers in a stacked configuration, the arrangement of electronic components allows either stereophonic signals or multi-channel audio signals to be separately processed and reproduced in the first pair and the second pair of speakers. A corresponding method is also disclosed.05-14-2009
20100098274METHOD AND SYSTEM FOR CREATING THREE-DIMENSIONAL SPATIAL AUDIO - A system and method for rendering a virtual sound source using a plurality of speakers in an arbitrary arrangement includes expanding a wave field of the virtual sound source and a composite wave field generated by the plurality of speakers into multi-pole expansions, and equating the multi-pole expansions to each other to form a continuous equation. A set of constraints is applied to the continuous equation that minimize an error in a sweet spot region resulting in a linear system of equations. The linear system of equations is solved using singular-value decomposition to arrive at a pseudo-inverse representing a multi-dimensional transfer function between the virtual sound source and the plurality of speakers. The multi-dimensional transfer function is then applied to a signal of the virtual sound source to render the virtual sound source in the sweet spot region using the plurality of speakers in the arbitrary arrangement.04-22-2010
20100104117CONSTANT-BEAMWIDTH LOUDSPEAKER ARRAY - A loudspeaker is provided for receiving an incoming electrical signal and transmitting an acoustical signal that is directional and has a substantially constant beamwidth over a wide frequency range. The loudspeaker may include a curved mounting plate that has curvature over a range of angles. The loudspeaker may include an array of speaker drivers coupled to the mounting plate. Each speaker driver may be driven by an electrical signal having a respective amplitude that is a function of the speaker driver's respective location on the mounting plate. The function may be a Legendre function. Alternatively, the loudspeaker may include a flat mounting plate. In this case, the respective electrical signal driving each speaker may have a phase delay that virtually positions the speaker onto a curved surface.04-29-2010
20090154736APPARATUS FOR GENERATING DIRECTIONAL SOUND AND MOBILE TERMINAL USING THE SAME - Provided are an apparatus for generating directional sound and a mobile terminal using the apparatus. The apparatus includes a signal controller for dividing and generating a reference signal into signals having three or more levels and phases, a first signal processor and a second signal processor for controlling a first signal and a second signal having levels and phases canceling each other among the signals generated from the signal controller, a central signal processor for controlling a signal having the same level and phase as the reference signal among the signals generated from the signal controller, a first speaker array and a second speaker array for converting signals output from the first signal processor and the second signal processor into sound signals and outputting the sound signals, and a central speaker for converting a signal output from the central signal processor into a sound signal and outputting the sound signal, and arranged between the first speaker array and the second speaker array.06-18-2009
20090304213Stereophonic Sound Imaging - A method for reducing phase differences varying with frequency occurring at certain listening positions with respect to loudspeakers reproducing respective ones of multiple sound channels in a listening space, the phase differences occurring in a sequence of frequency bands in which the phase differences alternate between being predominantly in-phase and predominantly out-of-phase, comprises adjusting the phase in multiple frequency bands in which the multiple sound channels are out-of-phase at such listening positions. Such adjustment of phase includes the frequency bands in which the width of comb filtering pass bands and notches resulting from phase differences at such listening positions would be greater than or commensurate with the critical band width if the phase adjustment were not applied. The listening space may be the interior of a vehicle.12-10-2009
20110013790Apparatus and Method for Multi-Channel Parameter Transformation - A parameter transformer generates level parameters, indicating an energy relation between a first and a second audio channel of a multi-channel audio signal associated to a multi-channel loudspeaker configuration. The level parameter are generated based on object parameters for a plurality of audio objects associated to a down-mix channel, which is generated using object audio signals associated to the audio objects. The object parameters have an energy parameter indicating an energy of the object audio signal. To derive the coherence and the level parameters, a parameter generator is used, which combines the energy parameter and object rendering parameters, which depend on a desired rendering configuration.01-20-2011
20130064402Sound Systems - According to certain embodiments of the present disclosure, systems are disclosed that house and orient electro-acoustic drivers therein to simulate surround effects from a single enclosure.03-14-2013
20090010460Methods, modules, and computer-readable recording media for providing a multi-channel convolution reverb - The present invention provides a method of generating, on a data processing system, a multi-channel audio convolution reverb, said method comprising providing a plurality of impulse responses corresponding to a desired room to be simulated; receiving, in input, multi-channel audio sample data; performing, for each respective audio channel, same channel convolution operation on said respective audio channel with a corresponding impulse response; for each audio channel other than said respective audio channel, performing cross-channel convolution operation respectively with a corresponding cross-channel impulse response; performing combination of the results of the respective convolution operations; and outputting the combination (or summation) result as said output audio channel; wherein, in said performing said cross-channel convolution operation, wherein at least one convolution operation is performed corresponding to a shorter length of impulse response than at least one other convolution operation, preferably, said cross-channel convolution operation being performed only for an initial part of said cross-channel impulse response, said initial part being defined by a definition parameter.01-08-2009
20120328135SPEAKER SYSTEM AND METHOD OF OPERATION THEREFOR - A speaker system comprises a first speaker (12-27-2012
20100098275SYSTEM AND METHOD FOR GENERATING SOUND EVENTS - A system and method for recording and reproducing three-dimensional sound events using a discretized, integrated macro-micro sound volume for reproducing a 3D acoustical matrix that reproduces sound including natural propagation and reverberation. The system and method may include sound modeling and synthesis that may enable sound to be reproduced as a volumetric matrix. The volumetric matrix may be captured, transferred, reproduced, or otherwise processed, as a spatial spectra of discretely reproduced sound events with controllable macro-micro relationships.04-22-2010
20090310802VIRTUAL SOUND SOURCE POSITIONING - Systems and methods for determining a virtual sound source position by determining an output for loudspeakers by the position of the loudspeakers in relation to a listener. The output of respective loudspeakers is generated using aural cues to give the listener knowledge of the virtual position of the virtual sound source. Both a gain in intensity and a delay are simulated.12-17-2009
20130216070DATA STRUCTURE FOR HIGHER ORDER AMBISONICS AUDIO DATA - The invention is related to a data structure for Higher Order Ambisonics HOA audio data, which data structure includes 2D or 3D spatial audio content data for one or more different HOA audio data stream descriptions. The HOA audio data can have on order of greater than ‘3’, and the data structure in addition can include single audio signal source data and/or microphone array audio data from fixed or time-varying spatial positions.08-22-2013
20090262962Audio Apparatus - An audio apparatus inputs audio signals oriented toward a plurality of positions to speakers which output sound toward the respective positions with narrow directivity, including a table storage section which stores a table for registering the plurality of positions and volume information showing set sound levels of sounds directed toward the positions in correspondence with each other; a signal processing section for adjusting output levels of respective audio signals in accordance with set level control values; and a signal processing control section which reads the volume information for the plurality of positions by reference to the table and which sets, in the signal processing section, the level control values for the audio signals directed to the respective positions in accordance with the read information.10-22-2009
20090041271Positioning of speakers in a 3D audio conference - A method, implemented by electronic data processing resources, for audio conference between conference participants via their respective terminals, the participants including at least one listener and at least one speaker, the method comprising, for at least said listener and for at least said speaker, the steps consisting in, estimating, as a function of a digital signal coming from a terminal of the speaker, at least one characteristic specific to said speaker, and determining, using said at least one estimated characteristic, a setpoint for positioning the speaker within a virtual space of the listener.02-12-2009
20100061575APPARATUS FOR REPRODUCTION OF STEREO SOUND - Apparatus for reproducing stereo sound having a housing (03-11-2010
20090003634SPEAKER ARRAY APPARATUS, MICROPHONE ARRAY APPARATUS, AND SIGNAL PROCESSING METHODS THEREFOR - A speaker array apparatus capable of carrying out directivity control over a wide frequency range with reduced processing load. In the speaker array apparatus, an audio signal input from a signal input unit is divided into components by a signal divider unit to generate divided audio signals of different frequency ranges. The divided audio signals are amplified by amplifier units of a signal processing unit with gains set in accordance with window functions set to the amplifier units, and a sound emission unit emits sounds based on the amplified audio signals, whereby desired directional characteristics can be attained over a wide frequency range and an amount of calculation in the processing by the signal processing unit can be reduced.01-01-2009
20080292120AUTOMATICALLY RECONFIGURABLE STEREO SPEAKER SYSTEM - An embodiment of an audio system comprises a speaker system configured to automatically change a coupling of an audio speaker from a first channel input to a second channel input if an external speaker is coupled to a first output. In embodiments of the invention, the speaker that connects to an audio source, such as an audio card of a personal computer (PC), automatically swaps channels based on the jack into which an external speaker is plugged. Thus, the reconfiguration of the audio system is automatic for the user in some embodiments, requiring nothing more from the user than selecting one of two jacks for use with an external speaker.11-27-2008
20100135510APPARATUS FOR GENERATING AND PLAYING OBJECT BASED AUDIO CONTENTS - Disclosed is an object based audio contents generating/playing apparatus. The object based audio contents generating/playing apparatus may include an object audio signal obtaining unit to obtain a plurality of object audio signals by recording a plurality of sound source signals, a recording space information obtaining unit to obtain recording space information with respect to a recording space of the plurality of sound source signals, a sound source location information obtaining unit to obtain sound location information of the plurality of sound source signals, and an encoding unit to generate object based audio contents by encoding at least one of the plurality of object audio signals, the recording space information, and the sound source location information, thereby enabling the object based audio contents to be played using at least one of a WFS scheme and a multi-channel surround scheme regardless of a reproducing environment of the audience.06-03-2010
20110206223Apparatus for Binaural Audio Coding - An apparatus configured to: determine at least one first channel audio signal phase value for a current audio frame; determine at least one second channel audio signal phase value for the current audio frame; calculate at least one current phase difference between the at least one first channel audio signal phase value and the at least one second channel audio signal phase value; and determine a time delay value dependent on the at least one current phase difference.08-25-2011
20100142733Apparatus and Method for Generating Directional Sound - An apparatus and method for generating directional sound are provided to output sound towards a specific sound zone. The apparatus includes an internal loudspeaker array having at least one sound source and edge loudspeakers, each with a sound source having directivity, located at respective ends of the internal loudspeaker array.06-10-2010
20080317267IMAGE/AUDIO PLAYBACK DEVICE OF MOBILE COMMUNICATION TERMINAL - Disclosed is an image/audio playback technology in a mobile communication terminal. According to the present invention, a single image is divided into two halves, i.e., left-half and right-half images, which are displayed on two mobile communication terminals, respectively. In addition, two mobile communication terminals can play left-side and right-side audio data, respectively, which compose stereo audio data, according to the relative locations of the two mobile communication terminals.12-25-2008
20090110218Dynamic equalizer - A dynamic equalization system 04-30-2009
20090316938LOUDSPEAKER APPARATUS AND SPEAKER SYSTEM - A loudspeaker apparatus includes a speaker array that has a plurality of speaker units which are arranged on a sound emitting surface of the speaker array, and emits sound beams on a plurality of channels, an angle sensing section that senses an angle change displaced from a previously set reference angle of the sound emitting surface, and an adjusting section that adjusts output angles of the sound beams in response to the angle change.12-24-2009
20130136281APPARATUS AND METHOD FOR CALCULATING FILTER COEFFICIENTS FOR A PREDEFINED LOUDSPEAKER ARRANGEMENT - An apparatus for calculating filter coefficients for a predefined loudspeaker arrangement has a multi-channel renderer. The multi-channel renderer calculates a filter coefficient for each loudspeaker of a virtual loudspeaker arrangement, being different from the predefined loudspeaker arrangement, based on a property (e.g. position or type) of a virtual source of an audio object to be reproduced by the predefined loudspeaker arrangement. Further, the multi-channel renderer determines an adapted filter coefficient for a loudspeaker of the predefined loudspeaker arrangement based on one or more calculated filter coefficients of one or more loudspeakers of the different virtual loudspeaker arrangement.05-30-2013
20100310099Electronic Accessory For An MP3 Player, And Method Of Providing The Same - In one embodiment, an electronic accessory configured to couple with an electronic device can comprise a housing and a spacer. The housing can comprise a body comprising a width, a length, and a thickness; and a neck extending from the body, the neck comprising a length less than the length of the body. The spacer can comprise an opening configured to be removably coupled around the neck. When the electronic accessory is fully electrically coupled to the electronic device through a docking end of the electronic device, the neck can be located between the body and the electronic device and the electronic device remains uncradled by the electronic accessory. Other embodiments and related methods are also disclosed herein.12-09-2010
20100316238Audio data receiving apparatus, audio data receiving method, and audio data transmission and receiving system - An audio data receiving apparatus includes a receiving unit configured to receive audio data sampled in accordance with a first clock signal; a synchronization unit configured to generate a second clock signal that is synchronized with the first clock signal by extracting clock components contained in the audio data; a demodulator configured to demodulate the audio data in accordance with the second clock signal; an oversampling unit configured to oversample the audio data demodulated by the demodulator by using a frequency higher than a frequency of the second clock signal; a clock generator configured to generate a third clock signal having a frequency nearly equal to the first clock signal; and a data output unit configured to output the audio data oversampled by the oversampling unit in accordance with the third clock signal generated by the clock generator.12-16-2010
20110243353Speaker Apparatus - A speaker apparatus includes: a first outputting unit that has a first speaker unit group in which a plurality of speaker units are arranged, and that outputs a supplied audio signal from the first speaker unit group as a sound which is directed in a direction; a second outputting unit that has a second speaker unit which is placed so that a front direction of the second speaker unit in which a frontage of the second speaker unit faces is different from a front direction of the first speaker unit group in which a frontage of the first speaker unit group faces, and that outputs a supplied audio signal from the second speaker unit as a sound; and a supplying unit that separates an input audio signal into an audio signal in a low-frequency band where a frequency band which is higher than a first frequency is attenuated, and an audio signal in a high-frequency band where a frequency band which is lower than a second frequency is attenuated, the supplying unit that supplies the audio signal in the low-frequency band to the first outputting unit, and that supplies the audio signal in the high-frequency band to the second outputting unit.10-06-2011
20090034762ARRAY SPEAKER DEVICE - In an array speaker device, a plurality of speaker units output sounds having directivities, which are then reflected on a prescribed wall or a reflection board so as to form virtual speakers, wherein a digital signal processor independently drives the plurality of speaker units in such a way that sound beams produced in response to input audio signals are emitted toward prescribed focal point positions in the space. A CPU sets up the focal point positions, which normally vibrate as necessary. Thus, a broad listening range and sound localization are realized.02-05-2009
20090034763AUDIO DEVICE AND SOUND BEAM CONTROL METHOD - In an audio device equipped with a speaker array device aligning a plurality of speaker units, a sound beam is emitted towards a specific person in a main beam direction, thus realizing the listening of the audio contents with good sound quality. Other persons listen to the audio contents at off-beam positions; hence, leaked sound due to side lobes of the sound beam is transmitted to them with respect to an intermediate band and a low band, thus realizing the listening of the sound with an adequate volume. A high band is subjected to sharp beam control, wherein with respect to an intermediate volume or higher volume, high-frequency components are convoluted with the sound beam and are emitted with non-directivity.02-05-2009
20100061574AUDIO SYSTEM AND SOUND FIELD CONTROLLER - An audio system comprises three or more loudspeaker units and a source of four or more audio channels, each loudspeaker unit comprising a monopole loudspeaker and a dipole loudspeaker, or a pistonically driven diaphragm loudspeaker and a resonant panel loudspeaker. The system may be arranged such that, for any position relative to a listener at which a loudspeaker unit is situated in use, sounds emitted in response to signals carried by the audio channel for which the designated intended output position corresponds most closely to the position of that loudspeaker unit are emitted from the monopole loudspeaker or pistonically driven diaphragm loudspeaker of that unit. If a loudspeaker unit is not situated approximately at such a position, then sounds emitted in response to signals carried by that channel may instead may be emitted from the dipole loudspeaker or resonant panel loudspeaker of that loudspeaker unit.03-11-2010
20110176696METHOD AND SYSTEM FOR ENHANCING BASS EFFECT IN AUDIO SIGNALS - The quality of music output from audio systems is improved by simulating the effect of low frequency signals in the human ear. This thus allows listeners to perceive the lower frequency signals, even though the speakers may be incapable of providing such low frequency outputs. Method and systems provided for processing enhancing bass effect in audio signals. Said method and systems result in the bass enhancement being computationally less intensive. The bass effect enhancement techniques described are based on the response of sine and cosine transfer functions and on the directional independence of low frequency components. The human ear is unable to resolve directions from low frequency components. The bass effect enhancement technique alternatively is based on response of an exponential transfer function.07-21-2011
20110081032MULTICHANNEL AUDIO SYSTEM HAVING AUDIO CHANNEL COMPENSATION - 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 receive 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.04-07-2011
20100303264APPARATUS AND METHOD FOR REPRODUCTION OF STEREO SOUND - Apparatus for reproduction of stereo sound from a two channel signal, having one or more first transducers (12-02-2010
20080267432Book with two speakers for generating a sound-field having two or more spatial dimensions - A book comprises two or more pages at least one of which is operable to visually display information about a subject, a first speaker mounted to a first page and operable to generate a sound, a second speaker mounted to a second page and operable to generate a sound, and an audio device operable to cause the first speaker to generate a first sound and the second speaker to generate a second sound, wherein the first and second sounds generate a sound-field having more than one spatial dimension. By generating a sound-field having more than one spatial dimension, the book can provide a reader an aural experience that is more accurate with the actual aural experience of the book's subject or aspect of the subject. Thus, the reader is more likely to accurately comprehend and appreciate the information that the book provides.10-30-2008
20100284555SPEAKER DEVICE - A speaker device includes: an acoustic diaphragm; a vibration transfer member provided in a state of touching the acoustic diaphragm over a given length, which is configured to transfer vibration to the acoustic diaphragm; and an actuator configured to add vibration corresponding to an audio signal to be reproduced to the vibration transfer member to thereby transfer vibration to the acoustic diaphragm through the vibration transfer member and to generate sound.11-11-2010
20110164768ACOUSTIC USER INTERFACE SYSTEM AND METHOD FOR PROVIDING SPATIAL LOCATION DATA - An acoustic user interface system and method for tracking spatial location data. A location tracking unit provides location information with respect to an object in an environment. The location information may be further employed to synthesize a perception of three-dimensional spatial location data with respect to multiple objects in the environment. The acoustic user interface communicates the three-dimensional spatial location data via an auditory channel to a stereophonic device based on a human stereophonic perception of one or more acoustic signal variable correlated with a relative location of the objects in order to co-ordinate and communicate location information effectively.07-07-2011
20110135124Apparatus and Method for Calculating Filter Coefficients for a Predefined Loudspeaker Arrangement - An apparatus for calculating filter coefficients for a predefined loudspeaker arrangement has a multi-channel renderer. The multi-channel renderer calculates a filter coefficient for each loudspeaker of a virtual loudspeaker arrangement, being different from the predefined loudspeaker arrangement, based on a property (e.g. position or type) of a virtual source of an audio object to be reproduced by the predefined loudspeaker arrangement. Further, the multi-channel renderer determines an adapted filter coefficient for a loudspeaker of the predefined loudspeaker arrangement based on one or more calculated filter coefficients of one or more loudspeakers of the different virtual loudspeaker arrangement.06-09-2011
20080219484Apparatus and Method for Controlling a Plurality of Speakers Means of a Dsp - In a reproduction environment, speakers are grouped in directional groups, wherein the directional groups overlap with respect to the associated speakers so that speakers are present which have a speaker parameter having different values for the first directional group and the second directional group. A controller for controlling a plurality of speakers has a provider for providing a source position of an audio source, wherein the source position is located between the first directional group position and the second directional group position. The apparatus further has a calculator for calculating a speaker signal for the at least one speaker, based on the first parameter value for the speaker parameter and based on the second parameter value for the speaker parameter.09-11-2008
20100158287Multi-directivity sound device - A sound producing apparatus with multi-directivity has two or more speakers to produce music or other types of audio sounds. Each of the speakers can produce audio sounds in a certain direction and at least one speaker is steerable so that its sound propagation direction relative to the others can be changed. Furthermore, one or more speakers can produce audio sounds in an adjustable angular range. One or more of the speakers can be dual-mode speakers, each of which can be operated as a wide-angle speaker or a narrow-angle speaker. With multi-directivity, it is possible to play one type of music in one direction and another type of music in another direction to suit the interests of the audience. The apparatus can be a mobile phone, an audio player, a digital or analog recorder/player, or the like.06-24-2010
20110216926VIRTUAL SURROUND FOR LOUDSPEAKERS WITH INCREASED CONSTANT DIRECTIVITY - A speaker system includes a first array of transducers in a speaker enclosure and, and at least a second array of transducers in the speaker enclosure. The second array is a low-frequency array and the first array is a high-frequency array. The transducers in the first array are configured to have an operating frequency region covering at least the frequency ranges of the first array and the second array, and the transducers in the second are configured to have an operating frequency region covering at least the frequency ranges of the first array and the second array. The speaker system further includes an input port, and a controller operatively coupled with the input port. The controller is configured to provide an electronic-audio signal to the transducers such that the first array and the second array are tuned to different center frequencies and are a two stage dipole beamforming array.09-08-2011
20110216925VIRTUAL SURROUND FOR LOUDSPEAKERS WITH INCREASED CONSANT DIRECTIVITY - Various embodiments use combinations of different methods for creating virtual surround. Some of the methods used in various embodiments include: dipole beamforming, multi-stage arrays, transducer directionality, and enclosure shading. In general, each of these methods may operate over a specific frequency band in various embodiments. The use of multiple methods to create virtual sound can increase the virtual sound effect and better maintain sound quality compared to the use of a single method for creating virtual surround. Each method used to create virtual surround can be optimized for a specific system configuration based on factors such as the physical set-up of the transducers, the size and shape of the enclosure, and the input signal configuration. Various embodiments allow for an intensity difference to be created for a listener across a wide range of frequencies in order to produce constant directionality.09-08-2011
20090136066STEREO IMAGE WIDENING - A stereo image can be widened by converting a stereo audio signal into a sum-difference audio signal, applying HRTF processing to the difference channel, and producing an output stereo audio signal. A stereo image can also be widened by receiving a stereo signal, converting the stereo signal into a sum-difference signal, applying HRTF processing to only the difference channel, upsampling the sum-difference signal, applying distortion, downsampling the sum-difference signal, and converting the sum-difference signal into a stereo signal. A system for widening a stereo image can comprise an input module configured to convert a stereo audio signal into a sum-difference audio signal, an HRTF module configured to apply HRTF processing to only the difference channel, a distortion module configured to apply a first distortion to the sum channel and a second different distortion to the difference channel, and an output module configured to produce an output stereo audio signal.05-28-2009
20110116665SYSTEM AND METHOD OF PROVIDING THREE-DIMENSIONAL SOUND AT A PORTABLE COMPUTING DEVICE - A method of providing three-dimensional (3D) sound at a wireless device is disclosed and may include detecting movement of a 3D virtual object within a display, determining a direction of the movement of the 3D virtual object, and transmitting sound from a 3D sound system that tracks the direction of the movement of the 3D virtual object. The method may further include selectively altering a phase of the sound as the 3D virtual object moves, selectively altering a volume of the sound as the 3D virtual object moves, selective altering a pitch of the sound as the 3D virtual object moves, selectively altering a tone of the sound as the 3D virtual object moves, or a combination thereof.05-19-2011
20090220111DEVICE AND METHOD FOR SIMULATION OF WFS SYSTEMS AND COMPENSATION OF SOUND-INFLUENCING PROPERTIES - An aliasing correction in a wave field synthesis system is achieved by ascertaining the aliasing filter property specific for a virtual source. This aliasing filter property, which, for example, may be the aliasing frequency is ascertained by help of the source position information. This aliasing filter property is used for an adaptive anti-aliasing filter for adaptive filtering of the audio signal associated with the source or the component signals associated with the source.09-03-2009
20120057731METHOD AND DEVICE FOR ACTIVATING A MEDIA PLAYER - A method and device for activating a media player enables efficient and convenient access to media files. The method includes determining that a wireless communication device is not operatively coupled to a network. An operative coupling of a speaker system to the wireless communication device is detected. The media player is then activated automatically in response to detecting the operative coupling of the speaker system to the wireless communication device.03-08-2012
20120002827SIGNAL PROCESSING SYSTEM AND SIGNAL PROCESSING METHOD - A signal processing system includes a transmitter, a sensor, a plurality of processing apparatuses, a placement determiner and a signal distributor. The transmitter transmits a wireless signal. The sensor detects the wireless signal transmitted by the transmitter. The plurality of processing apparatuses receives corresponding signals and executes processing on the received signals. The placement determiner determines placement of the processing apparatuses based on the detection of the wireless signal performed by the sensor. The signal distributor distributes and sends signals to the processing apparatuses respectively, on a basis of the placement determined by the placement determiner.01-05-2012
20120045079Compact noise suppression circuit for small speakers - A compact noise suppression circuit for a small speaker system and having a circuit board with a left signal input connection and a right signal input connection and a ground connection, and further having a left speaker supply connection and a left speaker return connection, and a right speaker supply connection and a right speaker return connection, and further having a left bifilar coil and a right bifilar coil, and left and right coil connections on the circuit board, and means securing said left and right bifilar coils to respective coil connections on the circuit board. Also disclosed is a compact portable audio player system incorporating such a noise suppression circuit, and a noise suppression circuit for a mon-aural signal system02-23-2012
20120300962Solar Powered Wireless Bluetooth Stereo Speaker With connectivity To MP3 Player - A portable Bluetooth stereo speaker including a rechargeable battery coupled to power the Bluetooth stereo speaker, a solar panel coupled to the rechargeable battery for recharging the battery when the solar panel is exposed to sunlight, a capacitive touch panel coupled to the Bluetooth stereo speaker for controlling music, skip track or volume, and a Bluetooth phone or MP3 player wirelessly coupled to send their music to the stereo speaker. A power boost function is coupled to the Bluetooth stereo speaker which turns on automatically to supply extra power to the speakers for louder, clearer sound playback when connected to an external charger.11-29-2012
20100092014APPARATUS AND METHOD FOR GENERATING A NUMBER OF LOUDSPEAKER SIGNALS FOR A LOUDSPEAKER ARRAY WHICH DEFINES A REPRODUCTION SPACE - An apparatus for generating a number of loudspeaker signals for a loudspeaker array defining a reproduction space includes a prestage configured to generate a plurality of output audio signals while using one or more audio signals associated with one or more virtual positions, each output audio signal being associated to a loudspeaker position such that the plurality of output audio signals together replicate a reproduction of the input audio signal(s) at the virtual position(s), and a number of output audio signals being smaller than a number of loudspeaker signals. The apparatus further includes a main stage configured to obtain the plurality of output audio signals and further to obtain, as a virtual position for each output audio signal, the loudspeaker positions, and to generate the number of loudspeaker signals for the loudspeaker array such that the loudspeaker positions are replicated as a virtual sources by the loudspeaker array.04-15-2010
20110123054METHOD AND SYSTEM FOR DETERMINING RELATIVE POSITIONS OF MULTIPLE LOUDSPEAKERS IN A SPACE - A method for identifying and recording the relative positions of loudspeakers in an array with respect to one another using amplifiers connected on a network.05-26-2011
20110002487Audio Channel Assignment for Audio Output in a Movable Device - A device that provides an audio output includes a speaker array mechanically fixed to the device. The speaker array includes at least three speakers. An orientation sensor detects an orientation of the speaker array and provides an orientation signal. An audio receiver receives a number of audio signals that include spatial position information. An audio processor is coupled to the speakers, the orientation sensor, and the audio receiver. The audio processor receives the audio signals and the orientation signal, and selectively routes the audio signals to the speakers according to the spatial position information and the orientation signal such that the spatial position information is perceptible to a listener. The orientation signal may be provided by a compass, an accelerometer, an inertial sensor, or other device. The orientation signal may be provided according to selection of display orientation, shape of touch input, image recognition of the listener, or the like.01-06-2011
20080279401STEREO EXPANSION WITH BINAURAL MODELING - A method for stereo expansion includes a step to remove the effects of actual relative speaker to listener positioning and head shadow and a step to introduce an artificial effect based on a desired virtual relative speaker to listener positioning using the inter-aural delay and the head-shadow models for the virtual speakers at desired angles relative to the listener thereby creating the impression of a widened and centered sound stage and an immersive listening experience. Known methods drown out vocals and add mid-range coloration thereby defeating equalization. The present method includes the integration of a novel binaural listening model and speaker-room equalization techniques to provide widening while not defeating equalization.11-13-2008
20120093348Generation of 3D sound with adjustable source positioning - A system for generating 3D sound with adjustable source positioning includes a first stage and a second stage, which is coupled to the first stage and to a speaker array that includes a plurality of speakers. The first stage is configured to position a plurality of virtual sound sources through a positioner output. The second stage is configured to generate a 3D signal for the speaker array based on the positioner output. The speaker array is configured to generate a 3D sound stage including the virtual sound sources based on the 3D signal. The first stage may be further configured to reposition the virtual sound sources.04-19-2012
20120093347ARRAY ELEMENT RIGGING COMPONENT, SYSTEM AND METHOD - Disclosed herein is a rigging component for connecting an array element in an array. The rigging component includes an elongate housing connectable to an array element; a connection link disposed within, and slideably extendible from, one end of the housing; a conduit extending into the housing from its opposite end, the conduit dimensioned to receive another connection link extending from an adjacent rigging component; and at least one latching device associated with the conduit for releasably retaining the other connection link within the conduit. Further disclosed is a system for connecting an array element in an array. The system comprises at least one rigging component having a connection link extendible to be locked at a single fixed distance and at least one rigging component having a connection link extendible to be locked at one of a plurality of fixed distances. Further disclosed is a method for connecting first and second array elements to each other. The method includes for each of the first and second array elements attaching at least one first rigging component having a connection link that is extendible to be locked at a single fixed distance to the array element; and attaching at least one second rigging component having a connection link that is extendible to be locked at one of a plurality of fixed distances to the array element. The method further comprises extending and locking at a selected fixed distance the connection link of the at least one second rigging component attached to the second array element; and extending and locking at the single fixed distance the connection link of the at least one first rigging component attached to the first array element; and bringing the first array element towards the second array element until corresponding first and second rigging components interconnect thereby to connect the first and second array elements to each other.04-19-2012
20110216924MULTI-ELEMENT DIRECTIONAL ACOUSTIC ARRAYS - An audio system that may be implemented in a television, that includes a plurality of directional arrays. The arrays may include a common acoustic driver and may be spaces non-uniformly.09-08-2011
20110235832Ambiophonic Headrest - A headrest provided with several loudspeakers which normally reproduce an ambiophonic sound experience. The headrest generally includes a central section provided with at least one loudspeaker, one side section provided with at least one loudspeaker and a second side section provided with at least one loudspeaker. The side sections are arranged on either side of the center section, and extend substantially perpendicularly towards the top relative to the center section. The headrest is arranged in a way so it can be connected to an audio signal source capable of generating several different audio signals.09-29-2011
20120328134PERSONAL AUDIO EQUIPMENT - A personal audio device comprises a first speaker housing (12-27-2012
20130022221SHAPING SOUND RESPONSIVE TO SPEAKER ORIENTATION - Techniques for shaping sound based on a speaker orientation are disclosed. In an embodiment, an audio data stream is obtained by a zone player having one or more speaker drivers, an orientation of the zone player is determined, and sound is reproduced by the zone player based on the orientation. The sound may be further shaped based on other states of the zone player in addition to orientation. The overall sound may be shaped from one zone player or from a collection of zone players.01-24-2013
20080253591Device Having a Point and a Spatial Sound Generating-Means for Providing Stereo Sound Sensation Over a Large Area - A device is described, having a first (10-16-2008
20080240474Audio Output Apparatus, Audio Signal Output Adjusting Method, Audio Signal Output Adjusting Process Program, and the Like - The present invention provides an audio output apparatus, an audio signal output adjusting method, an audio signal output adjusting process program, and the like capable of preventing the user (listener) from making a complicated sound field setting even in the case where the position of a center speaker is changed.10-02-2008
20080232616METHOD AND APPARATUS FOR CONVERSION BETWEEN MULTI-CHANNEL AUDIO FORMATS - An input multi-channel representation is converted into a different output multi-channel representation of a spatial audio signal, in that an intermediate representation of the spatial audio signal is derived, the intermediate representation having direction parameters indicating a direction of origin of a portion of the spatial audio signal; and in that the output multi-channel representation of the spatial audio signal is generated using the intermediate representation of the spatial audio signal.09-25-2008
20130177185INFORMATION PROCESSING APPARATUS AND SPEAKER - There is provided an information processing apparatus including a speaker having speaker units of a speaker for a left channel that outputs left channel audio, a speaker for a right channel that outputs right channel audio, and a speaker for bass that outputs bass, wherein the speaker units are integrally formed with one another and the speaker is provided in a housing.07-11-2013
20130177186Wireless Audio Player and Speaker System - The present disclosure relates to an audio player and speaker system, and particularly, to a wireless audio player and speaker system. More particularly, the present disclosure relates to a portable, rechargeable, wireless boombox-style audio player, for playing audio from an external audio source, and including a wireless charging element for wirelessly recharging an external media device.07-11-2013
20120250911AUDIO JACK WITH EMI SHIELDING - An audio jack for an audio plug for use in an electrical device, comprising a non-conductive enclosure having a front side and defining a cavity having an aperture within the front side for receiving the audio plug, the aperture having a first diameter, the cavity extending along a longitudinal axis; a conductive shielding formed from sheet metal folded over at least five sides of the enclosure including the front side, the shielding defining a shielding aperture centered on the enclosure aperture and having a second diameter larger than the first diameter; and a ground contact connected to the conductive shielding.10-04-2012
20130101146COMPACT STEREO LOUDSPEAKER FOR WALL MOUNTING - Loudspeaker in a single cabinet arranged for wall mounting. The loudspeaker has two dipole loudspeaker units spaced apart and arranged to generate respective acoustic dipole signals. Reflectors, such as plane surfaces, are arranged to reflect sound from the respective dipole loudspeaker units. The reflectors and the dipole loudspeaker units are arranged such in relation to the cabinet that sound from one side of their diaphragms is directed substantially parallel with the wall and away from the cabinet, preferably to the sides. Sound from the opposite side of the diaphragms is directed substantially perpendicular to the wall and away from the wall. Such loudspeaker is suited in versions as a stereo sound bar, e.g. placed under a flat screen TV set. The loudspeaker provides a wide stereo image which can be experienced in a large area in a normal room due to reflections from side walls, and still the loudspeaker produced a stable centre image. The dipole units may be implemented as two-way systems, and a centrally placed woofer may be included to reproduce low frequency audio components in mono.04-25-2013
20080273721Method for spatially processing multichannel signals, processing module, and virtual surround-sound systems - Embodiments of a virtual surround-sound system and methods for simulating surround-sound are generally described herein. Other embodiments may be described and claimed. In some embodiments, a processing module may include spatial processor spatially processes surround-left and surround-right channel signals and front-left and front-right channel signals and combines the spatially-processed signals for providing to drivers of center speaker after crosstalk cancellation and combining with a center-channel signal. In some embodiments, the processing module may include circuitry to cause the spatial processor to refrain from spatially processing either the front-left and front-right channel signals when front-left and/or front-right speakers are connected.11-06-2008
20100316237METHOD AND APPARATUS FOR SIMPLIFIED INTERCONNECTION AND CONTROL OF AUDIO COMPONENTS OF AN HOME AUTOMATION SYSTEM - A method and apparatus for distributing stereo signal of an audio system integrated with an home automation system. The audio system is further integrated with intercom and video intercom including the controlling of the intercom communications and the home automation appliances via a network and the Internet. The stereo signals are encoded and distributed from a selector/encoder, via distributors or directly to speakers via at least one single twisted pair carrying the encoded signals multiplexed with serial signals and with microphone signals for communicating with the intercom or with e-station via the network or the Internet. The multiplexed signals are propagated via the same twisted pair that also feeds a constant current to the system devices or providing power via separated twisted pair. The speakers include wired or wireless remote control receivers and transmitters for propagating remote control signals. The system is flexible and can be connected in many configurations using fitted network cables and connectors.12-16-2010
20130208926SURROUND SOUND SIMULATION WITH VIRTUAL SKELETON MODELING - A method for providing three-dimensional audio includes determining a world space ear position of a human subject based on a modeled virtual skeleton. The method further includes providing three-dimensional audio output to the human subject via an acoustic transducer array including one or more acoustic transducers. The three-dimensional audio output is configured such that channel-specific sounds appear to originate from corresponding simulated world speaker positions.08-15-2013

Patent applications in class Stereo speaker arrangement

Patent applications in all subclasses Stereo speaker arrangement