Class / Patent application number | Description | Number of patent applications / Date published |
381307000 | Surround (i.e., front plus rear or side) | 72 |
20080232617 | MULTICHANNEL SURROUND FORMAT CONVERSION AND GENERALIZED UPMIX - An audio signal is processed in the frequency domain to convert an input signal format to an output signal format. That is, a multichannel audio signal intended for playback over a predefined speaker layout can be formatted to achieve spatial reproduction over a different layout comprising a different number of speakers. | 09-25-2008 |
20080279402 | MULTICHANNEL AMPLIFIER - In a multichannel amplifier according to the present invention, in a case where a headphone is not connected to a headphone output terminal, a switch IC and first to third switches are on/off controlled by a control unit so that an audio signal path for outputting a front channel signal FL/FR to a front speaker and extending from a first input terminal | 11-13-2008 |
20080298610 | Parameter Space Re-Panning for Spatial Audio - Aspects of the invention provide methods, computer-readable media, and apparatuses for re-panning multiple audio signals by applying spatial cue coding. Sound sources in each of the signals may be re-panned before the signals are mixed to a combined signal. Processing may be applied in a conference bridge that receives two omni-directionally recorded audio signals. The conference bridge subsequently re-pans one of the signals to the listeners left side and the signal to the right side. The source image mapping and panning may further be adaptively based on the content and use case. Mapping may be done by manipulating the directional parameters prior to directional decoding or before directional mixing. Directional information that is associated with an audio input signal is remapped order to compress input source positions into virtual source positions. The virtual sources may be placed with respect to actual loudspeakers using binaural cue panning. | 12-04-2008 |
20080298611 | Sound Processor - A sound processor includes N (N is an integer of five or more) speakers, a sound source configured to output N sound signals an additional sound source configured to output an additional sound signal and a coefficient data input section configured to input N pieces of position information indicating respectively positions of the N speakers and N coefficients indicating respectively volumes of sounds outputted from the N speakers based on the additional sound signal a coefficient data analysis section configured to generate M (M is an integer equal to or greater than two and smaller than N) adjustment coefficients based on said N pieces of position information and the N coefficients wherein the M adjustment coefficients indicate volumes of sounds outputted from M speakers of the N speakers based on the additional sound signal. | 12-04-2008 |
20080298612 | Audio Signal Processing - An audio system for processing two channels of audio input to provide more than two output channels. The input may be conventional stereo material or compressed audio signal data. The audio processing includes separating the input signals into frequency bands and processing the frequency bands according to processes which may differ from band to band. The audio processing includes no processing of L−R signals. | 12-04-2008 |
20090003635 | Method and Apparatus for Processing a Media Signal - An apparatus for processing a media signal and method thereof are disclosed, by which the media signal can be converted to a surround signal by using spatial information of the media signal. The present invention provides a method of processing a signal, the method comprising of generating source mapping information corresponding to each source of multi-sources by using spatial information indicating features between the multi-sources; generating sub-rendering in | 01-01-2009 |
20090022342 | DIGITAL DECODER BOX WITH MULTI-CHANNEL AUDIO SOURCE FORMAT INDENTIFICATION FUNCTION - A digital decoder box is introduced for processing multiple-channel digital audio sources. The digital decoder box can detect formats of audio sources and perform different decoding processes, and output the audio sources to an earphone with 5.1 channel speakers. When a 5.1 channel audio source is received, the digital decoder box decodes the audio source and outputs the audio source to the 5.1-channel earphone. Three sets of audio signals are outputs including front stereo signals, rear stereo signals, center channel signal, and sub woofer signal. When a two channel audio source is received, the amplified audio signals from the digital decoder box are output to at least two sets of speakers within the 5.1-channel earphone. By the various speaker combinations within the 5.1-channel earphone, sound effects of separated sound fields may be generated. A two channel stereo audio source may then have different sound effects. | 01-22-2009 |
20090034764 | Sound Field Control Apparatus - In a sound field control apparatus, a storage unit stores position information of a plurality of speakers disposed in a three-dimensional space and position information of a sound receiving point. An input unit inputs an audio signal and position information of a virtual audio source. A localization controller localizes the audio signal at a position of the virtual audio source. The localization controller defines a virtual polyhedral solid that has vertices at respective positions of the plurality of the speakers, selects a face of the virtual polyhedral solid through which a directional line from the sound receiving point to the virtual audio source passes, selects speakers located at vertices of the selected face as speakers to which the audio signal is output, and determines ratios of levels of the audio signals to be provided to the speakers located at the vertices of the selected face based on ratios of respective angles between the directional line and straight lines directed from the sound receiving point to the vertices of the selected face. | 02-05-2009 |
20090060237 | ARRAY SPEAKER SYSTEM - Signals on respective RL, FL, C, FR, RR channels are divided into high frequency signals and low frequency signals by HPFs and LPFs respectively. The low frequency signals on the RL, FL, and C channels are superposed and output from a left-side woofer | 03-05-2009 |
20090074213 | APPARATUS AND METHOD FOR DOWN CONVERTING MULTICHANNEL PROGRAMS TO DUAL CHANNEL PROGRAMS USING A SMART COEFFICIENT GENERATOR - An apparatus for recording a multichannel program includes an audio converter adapted to convert said multichannel program at least partially into a modified program requiring less channels than said multichannel program. The audio converter including control elements used to modify the conversion process used to generate said modified program. A coefficient generator coupled to said converter to generate a coefficient indicative of the operation of said controls. A mixer is arranged to mix the coefficient with program data. A recorder is arranged to record the mixed data on a medium, whereby the medium can be played either using a multichannel player device or a reduced channel player device by using said coefficient. | 03-19-2009 |
20090103753 | Three-dimension array structure of surround-sound speaker - The present invention provides a single column surround-sound speaker with multiple speaker unit arrangements. In one aspect of the present invention, the single column surround-sound speaker includes a cylinder with at least three openings formed thereon spirally, at least three full range speakers attached in the openings, a base supporting the cylinder, and a sound field reconstructing unit formed within the cylinder or the base or outside of the cylinder and the base, wherein the sound field reconstructing unit is coupled to the full range speakers. | 04-23-2009 |
20090147975 | SPATIAL PROCESSING STEREO SYSTEM - A spatial processing stereo system (“SPSS”) that receives audio signals and a limited number of user input parameters associated with the spatial attributes of a room, such as “room size”, “stage distance”, and “stage width”. The input parameters are used to define a listening room and generate coefficients, room impulse responses, and scaling factors that are used generate additional surround signals. | 06-11-2009 |
20090245548 | AUDIO APPARATUS FOR WIRELESSLY TRANSMITTING AUDIO SIGNAL, AUDIO SYSTEM, AND AUDIO SIGNAL TRANSMISSION METHOD THEREOF - An audio apparatus includes a main unit to extract audio signals for at least two channels from a multichannel audio signal; and a transmitter to wirelessly transmit at least one audio signal of the extracted audio signals to a first receiver, and to wirelessly transmit at least one other audio signal of the extracted audio signals to a second receiver. | 10-01-2009 |
20090285420 | Device and Method for Producing a Surround Sound - A surround sound audio processing system includes a source that supplies a first signal for producing a first sound impression and a second signal for producing a second sound impression. A processing unit modifies the first signal and the second signal to produce a third sound impression of a virtual source, and provides first and second modified signals indicative thereof. The processing unit modifies the first signal and the second signal relative to each other such that the first and second modified signals have a phase shift of between 170° to 190°. | 11-19-2009 |
20090304214 | SYSTEMS AND METHODS FOR PROVIDING SURROUND SOUND USING SPEAKERS AND HEADPHONES - A mobile device may include at least one processor configured to generate a first set and second set of processed audio signals for use in a surround sound system. The mobile device may also include at least one output port adapted to provide the first set of processed audio signals for use in the surround sound system to at least two speakers. The mobile device may also include an output port adapted to provide the second set of processed audio signals for use in the surround sound system to headphone speakers. | 12-10-2009 |
20100092015 | STEREO SYSTEM AND SPEAKERS FOR A WATERCRAFT - A speaker and stereo system for a watercraft are disclosed. The stereo system includes an amplifier sized and adapted to fit within an internal compartment of the watercraft, and having a power input that connects to a battery of the watercraft for power. The amplifier further includes a control input, a signal amplifier, at least two audio outputs connected to the signal amplifier, and an audio input for receiving a digital audio signal from a digital music player to be amplified by the signal amplifier. The speaker for use with the stereo system includes a speaker housing having a flattened bottom, an opening at a front face, and an enclosure that tapers and extends to a substantially pointed terminal end. The speaker further includes a waterproof loudspeaker pivotally connected within the opening of the front face of the speaker housing to face a direction substantially opposite the pointed terminal end, and a mounting mechanism for removably mounting the speaker housing to an outer surface of the watercraft. | 04-15-2010 |
20100239110 | Systems and Methods for Optimizing an Audio Communication System - Methods and systems for optimizing and audio communication system, including detecting a surrounding noise profile, determining one or more states of one or more noise-related conditions corresponding to the surrounding noise profile, and associating the one or more states of the one or more noise-related conditions to the surrounding noise profile. | 09-23-2010 |
20100310100 | LOUDSPEAKER INPUT SWITCH SYSTEM TO REORIENT SOUND IN TRUCK - A loudspeaker input switch system for a truck cabin includes set of loudspeakers arranged in a perimeter arrangement, and an amplifier for amplifying signals from both a stereo player with a forward front-of-stage simulation, and a surround sound player with a front-of-stage simulation rotated 90° from the forward direction. A switching mechanism is used to selectively control the amplifier to change orientation of the front-of-stage simulation. A stereo music program can be played oriented correctly for a user driving the truck and a surround sound program can be played correctly oriented for a user turned 90° from the driving position. | 12-09-2010 |
20100329489 | ADAPTIVE BEAMFORMING FOR AUDIO AND DATA APPLICATIONS - A system and method for performing efficient directed sound and/or data to a user utilizing position information. Various aspects may, for example, comprise determining position associated with one or more recipients of audio signals, determining one or more audio signal parameters based, at least in part, on such determined position information, and generating audio signals based on such determined audio signal parameters. For example, direction, timing, phasing and/or magnitude of such audio signals may be adapted based on a dynamic recipient positional environment. | 12-30-2010 |
20110002488 | SPEAKER ARRAY AND DRIVER ARRANGEMENT THEREFOR - A driver arrangement for a speaker array ( | 01-06-2011 |
20110069850 | AUDIO REPRODUCTION SYSTEM COMPRISING NARROW AND WIDE DIRECTIVITY LOUDSPEAKERS - An audio reproduction system comprises an arrangement of audio speakers ( | 03-24-2011 |
20110164769 | METHOD AND APPARATUS FOR GENERATING AND PLAYING AUDIO SIGNALS, AND SYSTEM FOR PROCESSING AUDIO SIGNALS - A method for generating and playing audio signals and a system for processing audio signals are disclosed. The method for generating audio signals includes: generating distance information about an audio signal corresponding to a view point position, according to obtained auxiliary video and direction information about the audio signal, where the auxiliary video is a disparity map or a depth map; encoding the direction information and distance information about the audio signal, and sending the encoded information. The apparatus for generating audio signals includes an audio signal distance information obtaining module and an audio signal encoding module. With the present invention, the position information, including direction information and distance information, about the audio signal may be obtained accurately in combination with a three-dimensional video signal and a three-dimensional audio signal, without increasing the size of a microphone array, and the audio signal is sent and played. | 07-07-2011 |
20110228959 | PERSONAL MINIATURIZED LOUDSPEAKER PLACEMENT PLATFORM - An improved method and materials for retaining small loudspeakers to a platform composed of adjustable connecting miniaturized members utilizing international standards for surround sound in meters, but reduced to inches. One example would be a scale of one inch equaling one foot, but not limited to that particular miniature scale. The present invention utilizes any and all technical aspects of sound delivery and amplification in a miniature scale arrangement with the multi-directional surround sound. The speakers so mounted in measured inches from the center-point midway between the ears of the listener, delivers multi-directional sound in a re-creation of a musical, movie or gaming experience in the same perspective as being in a room with large speakers at high listening levels or a theater setting. Listening in the miniaturized setting, the listener will experience the same high levels in decibels as in the large room setting. | 09-22-2011 |
20110268299 | SOUND FIELD CONTROL APPARATUS AND SOUND FIELD CONTROL METHOD - A sound field control apparatus, which offers clear sound quality of speech and voice of a center channel signal, a wide service area, and a level easily perceived, and also achieves 5.1 sound image localization and the sense of reality by a two-channel loudspeaker structure, is implemented by a simple structure. | 11-03-2011 |
20120140959 | SOUND SYSTEM AND METHOD OF SOUND REPRODUCTION - A sound reproduction system comprises a left and right speakers located in close proximity, and a sound processor which provides audio signals to the pair of speakers. The sound processor preferably derives a cancellation signal from the difference between the left and right channels. The resulting difference signal is scaled, delayed (if necessary), and spectrally modified before being added to the left channel and, in opposite polarity, to the right channel. The spectral modification to the difference channel preferably takes the form of a low-frequency boost over a specified frequency range, in order to restore the correct timbral balance after the differencing process. Additional phase-compensating all-pass networks may be inserted in the difference channel to correct for any extra phase shift contributed by the spectral modifying circuit. The technique may be used in a surround sound system. | 06-07-2012 |
20120140960 | INTEGRATED SPEAKER AND HOME THEATER SOUND SYSTEM HAVING THE SAME - An integrated speaker and a home theater sound system having the same are provided. The integrated speaker includes: a first speaker that is configured to stand on a floor; and a second speaker mounted to an upper end of the first speaker, wherein the second speaker is a height speaker. | 06-07-2012 |
20120155681 | AUDIO SYSTEM, AUDIO SIGNAL PROCESSING DEVICE AND METHOD, AND PROGRAM - An audio system including a first speaker and a second speaker that are arranged in front of a predetermined listening position to be substantially bilaterally symmetrical with respect to the listening position; a third speaker and a fourth speaker that are arranged in front of the predetermined listening position to be substantially bilaterally symmetrical with respect to the listening position; a first attenuator that attenuates components that are equal to or less than a predetermined first frequency of an input audio signal; and an output controller that outputs sounds that are based on the input audio signal from the first speaker and the second speaker and outputs sounds that are based on the first audio signal in which components that are equal to or less than the first frequency of the input audio signal from the third speaker and the fourth speaker. | 06-21-2012 |
20120201405 | VIRTUAL SURROUND FOR HEADPHONES AND EARBUDS HEADPHONE EXTERNALIZATION SYSTEM - A combination of techniques for modifying sound provided to headphones to simulate a surround-sound speaker environment with listener adjustments. In one embodiment, Head Related Transfer Functions (HRTFs) are grouped into multiple groups, with four types of HRTF filters or other perceptual models being used and selectable by a user. Alternately, a custom filter or perceptual model can be generated from measurements of the user's body, such as optical or acoustic measurements of the user's head, shoulders and pinna. Also, the user can select a speaker type, as well as other adjustments, such as head size and amount of wall reflections. | 08-09-2012 |
20120243713 | SPATIALLY CONSTANT SURROUND SOUND SYSTEM - An audio processing system may modify an input surround sound signal to generate a spatially equilibrated output surround sound signal that is perceived by a user as spatially constant for different sound pressures of the surround sound signal. The audio processing system may determine based on a psychoacoustic model of human hearing, a loudness and a localisation for a combined sound signal. The loudness and the localisation may be determined by the system for a virtual user located between the front and the rear loudspeakers that has a predetermined head position in which one ear of the virtual user is directed towards one of front or rear loudspeakers and the other ear of the virtual user being directed towards the other of the front or rear loudspeakers. The audio processing system may adapt the front and/or rear audio signal channels based on the determined loudness and localisation. | 09-27-2012 |
20120263327 | METHOD OF GENERATING LEFT AND RIGHT SURROUND SIGNALS FROM A STEREO SOUND SIGNAL - A method of generating left (Ls) and right (Rs) sound signals known as “surround” signals from a stereo sound signal composed of a left sound signal and of a right sound signal. One of the stereo signals is subtracted from the other signal with the aid of a subtraction module to obtain a single subtraction signal (LR) in which the correlated and in-phase components of the stereo signals (L, R) have been removed. A right sound signal (Rs) and a left sound signal (Ls) are generated from the subtraction signal (L−R), these signals being decorrelated with respect to one another and corresponding respectively to the right and left sound “surround” signals. These “surround” signals (Ls, Rs) intend for broadcast on the rear channels of an acoustic system. | 10-18-2012 |
20120288125 | PSYCHO-ACOUSTIC NOISE SUPPRESSION - A method for perceptual enhancement of a received remote talker's voice, in the presence of local ambient noise, in an electronic voice communication system is provided. The method includes generating a pair of binaural voice signals from the remote talker's voice and manipulating the characteristics of the resulting pair of binaural signals. The two ears of the local listener are stimulated binaurally with the pair of binaural voice signals. The stimulating is performed adaptively as the ambient noise in the local listener's environment changes, thereby creating a perception of remote talker reacting actively to the local ambient noise, in a psycho-acoustically pleasing manner to the local listener. | 11-15-2012 |
20130003999 | METHOD FOR CREATING AN AUDIO ENVIRONMENT HAVING N SPEAKERS - Method for creating an audio environment having N speakers HP | 01-03-2013 |
20130121515 | LOUDSPEAKERS WITH POSITION TRACKING - The present invention combines a head-tracking system, for example a camera system typically used for user head and eye tracking, with a plurality of loudspeakers to as to enhance the audio experience of the user. The location of the user can be used to alter the audio signal sent to the plurality of loudspeakers to improve such functions as surround sound. In addition, the camera system can be used, when combined with an array of loudspeakers that can produce tight beams of sound, to direct different sound beams at different users, with virtually no crosstalk so as to allow users to experience different media from the same audio system, and which is tolerant of changed user positions. In addition, the camera system can aid setting up the array for real surround sound delivery, which bounces sound beams off wall. Cross-talk cancellation can additionally be used. The sound beams may represent 2-D or 3-D sound sources in real time. Sound beam parameters are adjusted to provide the listener with in impression of the 2-D or 3-D position and movement of sound-producing entities of audio-visual programme material in real-time. The beam parameters used include beam-direction, beam focal length, frequency response and gain. Such a Sound Projector producing a real-time representation of 3-D sound sources can be used alone or in conjunction with a video display, a television, a personal computer or a games console. | 05-16-2013 |
20130121516 | SYSTEM AND METHOD FOR SOUND REPRODUCTION - A sound reproduction system for reproducing an audio signal as originating from a first direction relative to a nominal position ( | 05-16-2013 |
20130129123 | Plurality of Mobile Communication Devices for Performing Locally Collaborative Operations - A system to reproduce multi channel sound. A first wireless transceiver wirelessly receives audio data and acoustically reproduces a front center channel. A second wireless transceiver wirelessly receives the audio data and acoustically reproduces a front right channel. A third wireless transceiver wirelessly receives the audio data and acoustically reproduces a front left channel. A fourth wireless transceiver wirelessly receives the audio data and acoustically reproduces a rear right channel. And a fifth wireless transceiver wirelessly receives the audio data and acoustically reproduces a rear left channel. | 05-23-2013 |
20130208928 | AUDIO PROCESSING APPARATUS - A ZONE4 left audio signal Z | 08-15-2013 |
20130223658 | Surround Sound System - A surround sound system for reproducing a spatial sound field in a sound control region within a room having at least one sound reflective surface. The system uses multiple steerable loudspeakers located about the sound control region, each loudspeaker having a plurality of different individual directional response channels being controlled by respective speaker input signals to generate sound waves emanating from the loudspeaker with a desired overall directional response. A control unit connected drives each of the loudspeakers and has pre-configured filters based on measured acoustic transfer functions for the room for filtering the input spatial audio signals to generate the speaker input signals for all the loudspeakers to generate sound waves with co-ordinated overall directional responses that combine together at the sound control region in the form of either direct sound or reflected sound from the reflective surface(s) of the room to reproduce the spatial sound field. | 08-29-2013 |
20130236039 | METHOD AND APPARATUS FOR PLAYBACK OF A HIGHER-ORDER AMBISONICS AUDIO SIGNAL - An advantage of Ambisonics representation is that the reproduction of the sound field can be adapted individually to nearly any given loudspeaker position arrangement. The invention allows systematic adaptation of the playback of spatial sound field-oriented audio to its linked visible objects, by applying space warping processing as disclosed in EP 11305845.7. The reference size (or the viewing angle from a reference listening position) of the screen used in the content production is encoded and transmitted as metadata together with the content, or the decoder knows the actual size of the target screen with respect to a fixed reference screen size. The decoder warps the sound field in such a manner that all sound objects in the direction of the screen are compressed or stretched according to the ratio of the size of the target screen and the size of the reference screen. | 09-12-2013 |
20130251178 | AUDIO APPARATUS, AUDIO SIGNAL TRANSMISSION METHOD, AND AUDIO SYSTEM - An audio apparatus, an audio signal transmission method, and an audio system are provided. The audio signal transmission method includes: wirelessly receiving an audio signal from a first external device; converting the received audio signal into audio signals of multi-channels; and wirelessly transmitting an audio signal of at least one of the multi-channels to at least one of second external devices. Therefore, the audio apparatus wirelessly communicates with a plurality of external devices, and thus a user can connect an audio device to an external device without using wired cables. | 09-26-2013 |
20130301857 | AUDIO PROCESSING APPARATUS - The number of digital-analog converters is decreased in an audio processing apparatus that outputs an audio signal to not only a device disposed in a main room but also a device disposed in a sub-room. The audio processing apparatus includes a digital-analog conversion unit for outputting an extended left audio signal and an extended right audio signal in an analog format, or for outputting a sub-room left audio signal and a sub-room right audio signal in the analog format; and an input switch unit that switches between a supply of a combination of the extended left audio signal and the extended right audio signal to the digital-analog conversion unit and a supply of a combination of the sub-room left audio signal and the sub-room right audio signal to the digital-analog conversion unit. | 11-14-2013 |
20130329922 | 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. | 12-12-2013 |
20140016802 | LOUDSPEAKER POSITION COMPENSATION WITH 3D-AUDIO HIERARCHICAL CODING - In general, techniques are described for compensating for loudspeaker positions using hierarchical three-dimensional (3D) audio coding. An apparatus comprising or more processors may perform the techniques. The processors may be configured to perform a first transform that is based on a spherical wave model on a first set of audio channel information for a first geometry of speakers to generate a first hierarchical set of elements that describes a sound field. The processors may further be configured to perform a second transform in a frequency domain on the first hierarchical set of elements to generate a second set of audio channel information for a second geometry of speakers. | 01-16-2014 |
20140044288 | MULTI-CHANNEL AUDIO ENHANCEMENT SYSTEM - A method for processing audio signals can include receiving left and right front audio signals and left and right rear audio signals, where the left and right rear audio signals. In addition, the method can include applying at least one front perspective filter to each of the left and right front audio signals to yield filtered left and right front output signals, where the left and right front output signals each drive a front speaker. Moreover, the method can include applying at least one rear perspective filter to each of the left and right rear audio signals to yield left and right rear output signals, where the left and right rear output signals each drive a rear speaker to simulate a rear surround sound effect when positioned in front of a listener. | 02-13-2014 |
20140064527 | APPARATUS AND METHOD FOR GENERATING AN OUTPUT SIGNAL EMPLOYING A DECOMPOSER - An apparatus for generating an output signal having at least two output channels from an input signal having at least two input channels, has an ambient/direct decomposer, an ambient modification unit and a combination unit. The ambient/direct decomposer is adapted to decompose at least two input channels of the input signal such that each one of the at least two input channels is decomposed into a signal of a first signal group and into a signal of a second signal group. The ambient modification unit is adapted to modify a signal of the ambient signal group or a signal derived from a signal of the ambient signal group to obtain a modified signal as a first output channel. The combination unit is adapted to combine a signal of the ambient signal group or a signal derived from a signal of the ambient signal group and a signal of the direct signal group or a signal derived from a signal of the direct signal group as a second output channel. | 03-06-2014 |
20140086437 | SPEAKER FOR REPRODUCING SURROUND SOUND - The present invention relates to a speaker, and a method and surround sound system for processing multi-channel audio signals in each of a plurality of audio output sources for generation of surround sound in a listening area. In particular, the system comprises a transmitter for transmitting a left channel (L) signal and a right channel (R) signal to a speaker. The speaker comprises a processing unit configured to (a) receive an audio signal having a left channel (L) signal and a right channel (R) signal; (b) process separately and independently the L and R audio signals to produce processed signals; and (c) mix the processed signals to produce the surround sound signal. | 03-27-2014 |
20140146984 | CONSTRAINED DYNAMIC AMPLITUDE PANNING IN COLLABORATIVE SOUND SYSTEMS - In general, techniques are described for performing constrained dynamic amplitude panning in collaborative sound systems. A headend device comprising one or more processors may perform the techniques. The processors may be configured to identify, for a mobile device participating in a collaborative surround sound system, a specified location of a virtual speaker of the collaborative surround sound system and determine a constraint that impacts playback of audio signals rendered from an audio source by the mobile device. The processors may be further configure to perform dynamic spatial rendering of the audio source with the determined constraint to render audio signals that reduces the impact of the determined constraint during playback of the audio signals by the mobile device. | 05-29-2014 |
20140153753 | Object Based Audio Rendering Using Visual Tracking of at Least One Listener - In some embodiments, a method and system for generating image data, processing the image data to generate listener data indicative of at least one listener characteristic (e.g., position and/or size of each listener), and rendering at least one audio object (e.g., rendering an object based audio program) in response to the listener data (and optionally also listener identification data). For rendering a program indicative of audio objects, at least one speaker feed may be generated for driving at least one speaker to emit sound indicative of one of the objects and additional sound indicative of another one of the objects, where the sound is intended to be perceived by a listener at a first position with balance and delay appropriate to the first position, and the additional sound is intended to be perceived by a listener at a second position with balance and delay appropriate to the second position. | 06-05-2014 |
20140177883 | Total Angle 360-Angled Loudspeaker Cabinet Enclosure Designing Technology - The present invention provides angled loudspeaker cabinet enclosures utilized for sound reproduction. The invention mainly comprises a setup of loudspeaker cabinet enclosures which include front, centre and rear loudspeaker cabinet enclosure in various embodiments wherein the font surfaces of the speaker units are inclined to wherein the sound waves emanating from the speaker units directly reach the listener present at the direction of inclination of the front surface to provide clear, immersive and 360 degree angle coverage to the listener irrespective of the location of the listener with respect to the sound source by distributing sound waves uniformly across the listening area. | 06-26-2014 |
20140219483 | SYSTEM AND METHOD FOR SETTING AUDIO OUTPUT CHANNELS OF SPEAKERS - A location detecting apparatus for detecting a location of a speaker includes a communication unit which communicates with a plurality of speakers, a plurality of sensors which sense optical signals respectively output from the plurality of speakers; and a controller which determines locations of the plurality of speakers according to a result of the sensing by the plurality of sensors and control the communication unit to transmit the determined location information of the plurality of speakers to an external apparatus, wherein the external apparatus sets audio output channels corresponding to the plurality of speakers based on the determined location information of the plurality of speakers. | 08-07-2014 |
20140241552 | SOUND REPRODUCTION DEVICE - Provided is a sound reproduction device including a loudspeaker and a superdirective speaker. The loudspeaker is configured so that a sound pressure of audible sound produced therefrom decreases as the sound travels farther away from the loudspeaker. The superdirective speaker is configured so that a sound pressure of audible sound produced therefrom has a peak at a predetermined distance from the superdirective speaker, and is configured to use an ultrasonic wave as a carrier wave. The loudspeaker and the superdirective speaker are positioned such that a loudspeaker sound field of the audible sound produced from the loudspeaker and a superdirective speaker sound field of the audible sound produced from the superdirective speaker overlap with each other at a position of a listener. | 08-28-2014 |
20140341404 | Multi-Channel Audio Rendering - A multi-channel audio rendering system comprises an audio renderer ( | 11-20-2014 |
20140355797 | BROAD SOUND FIELD LOUDSPEAKER SYSTEM - A three channel speaker system is provided that includes a three-channel processor to receive a signal from an audio source, where the speaker system includes a center-channel speaker on a first face, a left-channel speaker on a second face, and a right-channel speaker on a third face, where the first face further includes first and second passive radiators positioned on opposite sides of the center-channel speaker, and also includes a fourth face comprising third and fourth passive radiators. Where all three-channel speakers are on a front face, passive radiators may be positioned in between each of the speakers. | 12-04-2014 |
20150016642 | SPATIAL CALIBRATION OF SURROUND SOUND SYSTEMS INCLUDING LISTENER POSITION ESTIMATION - A method for calibrating a surround sound system is disclosed. The method utilizes a microphone array integrated in a front center loudspeaker of the surround sound system or a soundbar facing a listener. Positions of each loudspeaker relative to the microphone array can be estimated by playing a test signal at each loudspeaker and measuring the test signal received at the microphone array. The listener's position can also be estimated by receiving the listener's voice or other sound cues made by the listener using the microphone array. Once the positions of the loudspeakers and the listener's position are estimated, spatial calibrations can be performed for each loudspeaker in the surround sound system so that listening experience is optimized. | 01-15-2015 |
20150016643 | APPARATUS AND METHOD FOR CREATING PROXIMITY SOUND EFFECTS IN AUDIO SYSTEMS - An apparatus for driving loudspeakers of a sound system is provided. The sound system has at least two loudspeakers of a basic system and at least three loudspeakers of a focus system, each of the loudspeakers having a position in an environment. The apparatus has a basic channel provider for providing basic system audio channels to drive the loudspeakers of the basic system, and a focused source renderer for providing focus system audio channels to drive the loudspeakers of the focus system. The focused source renderer is configured to calculate a plurality of delay values for the loudspeakers of the focus system based on the positions of the loudspeakers of the focus system and based on a position of a focus point, and to generate at least three focus group audio channels for at least some of the loudspeakers of the focus system based on the plurality of delay values and based on a focus audio base signal to provide the focus system audio channels. | 01-15-2015 |
20150036849 | MATRIX DECODER WITH CONSTANT-POWER PAIRWISE PANNING - A constant-power pairwise panning upmixing system and method for upmixing from a two-channel stereo signal to a multi-channel surround sound (having more than two channels). Each output channel is some combination of the two input channels. Closed-form solutions are used to calculate dematrixing coefficients that are used to weight each input channel. The dematrixing coefficients are computed based on an inter-channel level difference and an inter-channel phase difference between the two input signals. The weighted input channels then are mixed uniquely for each output channel to generate a surround sound output from the stereo input signal. Each dematrixing coefficient has an in-phase component and an out-of-phase component. The phase coefficients for each component vary in time and are based on the phase difference between the input signals. The resultant surround sound output faithfully simulates the audio content as originally mixed. | 02-05-2015 |
20150055808 | SYSTEMS AND METHODS FOR PROVIDING AUDIO TO A USER BASED ON GAZE INPUT - According to the invention, a method for providing audio to a user is disclosed. The method may include determining, with an eye tracking device, a gaze point of a user on a display. The method may also include causing, with a computer system, an audio device to produce audio to the user, where content of the audio may be based at least in part on the gaze point of the user on the display. | 02-26-2015 |
20150063610 | AUDIO RENDERING SYSTEM CATEGORISING GEOSPATIAL OBJECTS - The present disclosure relates to a method and an audio rendering system comprising at least one portable terminal configured to receive geospatial object data from at least one geospatial object data server. The geospatial object data is interrelated to a geographical position. The at least one portable terminal is further configured to render retrieved geospatial object data into an acoustic scene by a rendering algorithm. The acoustic scene is spatially interrelated to the geographical position. The at least one audio unit is configured to sound a rendered acoustic scene information into at least one ear of a user. The audio rendering system is further configured for rendering retrieved geospatial object data into the acoustic scene based on categorised acoustic scene information representing a corresponding categorised geospatial object data. | 03-05-2015 |
20150110310 | METHOD FOR REPRODUCING AN ACOUSTICAL SOUND FIELD - The application relates to a method of reproducing an acoustical sound field to a listener at a first location, to a method of testing a hearing assistance system, and to a hearing assistance test system. The method comprises 1) Determining a transfer function from each loudspeaker unit of the loudspeaker array to all microphone units of the microphone array, thereby providing a set of transfer functions; 2) Inverting the set of transfer functions and determining a system of optimal filters; 3) Placing the microphone array in a possible, intended position of the listener's head in a particular sound scene at a second location and recording sound of the particular sound scene at the second location; 4) Determining the loudspeaker signals of the particular sound scene configured to be played to the listener at the first location by the loudspeaker array by convolving the inverted system of optimal filters with the recorded signals. | 04-23-2015 |
20150125011 | AUDIO SIGNAL PROCESSING DEVICE, AUDIO SIGNAL PROCESSING METHOD, PROGRAM, AND RECORDING MEDIUM - Provided is an audio signal processing device including frequency conversion units configured to generate a plurality of input audio spectra by performing frequency conversions on input audio signals input from a plurality of microphones provided in a housing, a first input selection unit configured to select input audio spectra corresponding to a first combination direction from among the input audio spectra based on an arrangement of the microphones for the housing, and a first combining unit configured to generate a combined audio spectrum having directivity of the first combination direction by calculating power spectra of the input audio spectra selected by the first input selection unit. | 05-07-2015 |
20150304788 | SURROUND COMPONENT GENERATOR - Provided is a surround component generation device capable of generating surround components for multichannel reproduction based on two-channel audio signals with a small amount of arithmetic operation. The surround component generation device includes: multipliers for changing amplitudes of audio input signals; subtractors for subtracting outputs of the multipliers from the input signals; coefficient updaters for updating coefficients of the multipliers; subtractors for generating surround components based on the input signals and the output signals of the multipliers; output switches for switching and outputting the output signals of the subtractors; and output switching controllers for controlling the output switches. Each of the coefficient updaters updates the coefficient of the multiplier based on the output of the subtractor, and each of the output switching controllers switches the output switch based on the coefficient updated by the coefficient updater. | 10-22-2015 |
20150304791 | VIRTUAL HEIGHT FILTER FOR REFLECTED SOUND RENDERING USING UPWARD FIRING DRIVERS - Embodiments are directed to speakers and circuits that reflect sound off a ceiling to a listening location at a distance from a speaker. The reflected sound provides height cues to reproduce audio objects that have overhead audio components. The speaker comprises upward firing drivers to reflect sound off of the upper surface and represents a virtual height speaker. A virtual height filter based on a directional hearing model is applied to the upward-firing driver signal to improve the perception of height for audio signals transmitted by the virtual height speaker to provide optimum reproduction of the overhead reflected sound. The virtual height filter may be incorporated as part of a crossover circuit that separates the full band and sends high frequency sound to the upward-firing driver. | 10-22-2015 |
20150312692 | INNOVATIVE SOUND SYSTEM - A sound system comprising: a body ( | 10-29-2015 |
20150326988 | Production of 3D Audio Signals - There is provided a device which produces the necessary directional audio signals for a 3-dimensional audio playback and which in that case uses as input signals the available channels of an audio recording intended for 2-dimensional audio playback. By taking psychoacoustic effects into account the desired spatial 3D audio effect is produced by a targeted use of signal delays, frequency-dependent amplitude matchings and a limited use of hall effects in conjunction with a targetedly asymmetric processing. | 11-12-2015 |
20150334503 | AUDIO SYSTEM TUNING - An embodiment provides a system, including: a sensor; a processor operatively coupled to the sensor; and a memory storing instructions executable by the processor to: capture, using the sensor, depth data related to at least one position within an area; determine characteristics associated with the at least one position based on the depth data; and configure audio output to one or more speakers of an audio system based on the acoustic characteristics. Other aspects are described and claimed. | 11-19-2015 |
20150334504 | DETERMINING POSITIONS OF MEDIA DEVICES BASED ON MOTION DATA - Techniques for positioning devices using motion data are described. Disclosed are techniques for receiving a portion of motion data from one or more sensors coupled to a first device, generating data representing a first displacement of a first device relative to a reference point based on the portion of motion data, and determining a position of the first device relative to a position of a second device based on the first displacement. Various operations may be performed based on the position of the first device. In some examples, an audio signal to be generated at a speaker coupled to the first device may be determined as a function of the position of the first device, and generation of the audio signal at the speaker coupled to the first device may be caused. | 11-19-2015 |
20150350804 | Reflected Sound Rendering for Object-Based Audio - Embodiments are described for rendering spatial audio content through a system that is configured to reflect audio off of one or more surfaces of a listening environment. The system includes an array of audio drivers distributed around a room, wherein at least one driver of the array of drivers is configured to project sound waves toward one or more surfaces of the listening environment for reflection to a listening area within the listening environment and a renderer configured to receive and process audio streams and one or more metadata sets that are associated with each of the audio streams and that specify a playback location in the listening environment. | 12-03-2015 |
20150373472 | DATA PROCESSING DEVICE AND DATA PROCESSING PROGRAM - A data processing device includes a conversion processing unit configured to convert first vibration data into second vibration data configured to control localization of a vibration through a vibration state of a vibration unit included in an application device, on the basis of configuration information indicating a configuration of the vibration unit and the first vibration data which is input. | 12-24-2015 |
20150382108 | Speaker Array Apparatus - A speaker array device includes a first speaker array and a second speaker array. The first speaker array has plural first speaker units arranged in a first surface and output a first sound. The second speaker array has plural second speaker units arranged in a second surface that is different from the first surface and output a second sound. When the second speaker array and the first speaker array are installed in a room having a ceiling, the second speaker array is installed in such a manner that a normal direction to the second surface is match with a direction in which the second sound emitted from the second speaker array reaches, only indirectly, through reflection or diffraction, a sound receiving point or that the normal direction to the second surface is match with a direction in which the second sound reaches the sound receiving point with a predetermined sound volume. | 12-31-2015 |
20160029140 | METHODS AND SYSTEMS FOR GENERATING AND INTERACTIVELY RENDERING OBJECT BASED AUDIO - Methods for generating an object based audio program, renderable in a personalizable manner, and including a bed of speaker channels renderable in the absence of selection of other program content (e.g., to provide a default full range audio experience). Other embodiments include steps of delivering, decoding, and/or rendering such a program. Rendering of content of the bed, or of a selected mix of other content of the program, may provide an immersive experience. The program may include multiple object channels (e.g., object channels indicative of user-selectable and user-configurable objects), the bed of speaker channels, and other speaker channels. Another aspect is an audio processing unit (e.g., encoder or decoder) configured to perform, or which includes a buffer memory which stores at least one frame (or other segment) of an object based audio program (or bitstream thereof) generated in accordance with, any embodiment of the method. | 01-28-2016 |
20160037258 | Phase Independent Surround Speaker - A speaker is disclosed that can be positioned as either a right or left front surround or a right or left rear surround in any surround sound system. The speaker includes a housing including a first driver, a second driver, a third driver, and a fourth driver. A high pass filter is connected with the first and third drivers and the first and third drivers are wired having opposite polarities from one another such that the first driver is out of phase with the third driver by 180 degrees. A low pass filter is connected with a lattice filter, wherein the low pass filter is configured to shift a phase of an input signal −90 degrees and the lattice filter is configured to shift the phase by adding +45 degrees thereby forming a −45 degree phase shift. An output of the lattice filter is connected with the second and fourth drivers. | 02-04-2016 |
20160044433 | RENDERING AUDIO USING SPEAKERS ORGANIZED AS A MESH OF ARBITRARY N-GONS - In some embodiments, a method for rendering an audio program indicative of at least one source, including by panning the source along a trajectory comprising source locations using speakers organized as a mesh whose faces are convex N-gons, where N can vary from face to face, and N is not equal to three for at least one face of the mesh, including steps of: for each source location, determining an intersecting face of the mesh (including the source location's projection on the mesh), thereby determining a subset of the speakers whose positions coincide with the intersecting face's vertices, and determining gains (which may be determined by generalized barycentric coordinates) for speaker feeds for driving each speaker subset to emit sound perceived as emitting from the source location corresponding to the subset. Other aspects include systems configured (e.g., programmed) to perform any embodiment of the method. | 02-11-2016 |
20170238115 | Surround Sound Effects Provided By Cell Phones | 08-17-2017 |