Patents
Sitemap › H04 - Electric communication technique › H04S - Stereophonic systems › H04S 3 - Systems employing more than two channels, e.g. quadraphonic
Patents for H04S 3 - Systems employing more than two channels, e.g. quadraphonic (4,597)
12/2008
12/10/2008EP1999847A2 Filter adaptive frequency resolution
12/10/2008EP1999747A1 Audio decoding
12/10/2008EP1999744A1 Reduced number of channels decoding
12/10/2008EP1116223B1 Multi-channel signal encoding and decoding
12/10/2008CN100442943C Head ear-phone system
12/09/2008US7463748 [Earphone structure with a composite sound field ]
12/04/2008WO2008145894A1 Audio encoding and decoding method and associated audio encoder, audio decoder and computer programs
12/03/2008EP1998477A1 Personal listening device
12/02/2008US7460673 Point source speaker system
11/2008
11/27/2008WO2008143561A1 Methods and arrangements for group sound telecommunication
11/27/2008WO2008142651A1 A device for and a method of processing audio data
11/26/2008EP1995721A1 Parametric joint-coding of audio sources
11/26/2008EP1994796A1 Binaural rendering using subband filters
11/26/2008EP1994526A1 Joint sound synthesis and spatialization
11/26/2008CN100438706C Multichannel audio system, and head unit and slave unit used for the same
11/25/2008US7457425 Vehicle sound system
11/25/2008US7457421 Circuit and program for processing multichannel audio signals and apparatus for reproducing same
11/20/2008US20080285763 Common Signal Eliminator From a Stereo Source
11/19/2008EP1991985A1 Method, medium, and system generating a stereo signal
11/18/2008US7454257 Apparatus and method for down converting multichannel programs to dual channel programs using a smart coefficient generator
11/13/2008WO2008135049A1 Spatial sound reproduction system with loudspeakers
11/13/2008US20080279410 Directional hearing enhancement systems
11/12/2008EP1989920A1 Audio encoding and decoding
11/11/2008US7451093 Systems and methods of remotely enabling sound enhancement techniques
11/11/2008US7451006 Sound processing system using distortion limiting techniques
11/11/2008US7450727 Multichannel downmixing device
11/06/2008WO2008131903A1 Apparatus and method for synthesizing an output signal
11/06/2008CA2684975A1 Apparatus and method for synthesizing an output signal
11/05/2008EP1803325B1 Diffuse sound envelope shaping for binaural cue coding schemes and the like
11/05/2008EP1386415A4 Parametric virtual speaker and surround-sound system
11/04/2008US7447629 Audio coding
11/04/2008US7447321 Sound processing system for configuration of audio signals in a vehicle
11/04/2008US7447317 Compatible multi-channel coding/decoding by weighting the downmix channel
10/2008
10/30/2008WO2008129767A1 Acoustic reproduction device
10/29/2008CN101297599A Removing time delays in signal paths
10/29/2008CN101297598A Removing time delays in signal paths
10/29/2008CN101297597A Removing time delays in signal paths
10/29/2008CN101297596A Removing time delays in signal paths
10/29/2008CN101297595A Removing time delays in signal paths
10/29/2008CN101297594A Removing time delays in signal paths
10/29/2008CN100429960C Multi-channel stereo converter for deriving a stereo surround and/or audio centre signal
10/28/2008US7443987 Discrete surround audio system for home and automotive listening
10/25/2008CA2628524A1 Sound tuning method
10/23/2008DE102007018032A1 Erzeugung dekorrelierter Signale Generation of decorrelated signals
10/22/2008EP1621046B1 Loudspeaker system for virtual sound synthesis
10/22/2008CN100428866C Multi audio track active matrix audio replay having maximum lateral dissociation
10/21/2008US7440810 Multi-channel media applications support with channel-to-connector mapping
10/16/2008US20080253577 Multi-channel sound panner
10/15/2008EP1979898A1 Method and apparatus for processing a media signal
10/15/2008CN101288338A Voice reproducing method and reproducer using line array speaker unit
10/15/2008CN101287308A Method for assigning a plurality of audio channels to a plurality of speakers, corresponding computer program product, storage means and manager mode
10/09/2008US20080247554 Wireless Digital Transmission of Low Frequency Effects and Surround Channels For Surround Sound System
10/09/2008DE102007026591A1 Mehrkanal-Kopfhörer und Struktur desselben The same multi-channel headphones and structure
10/08/2008CN201131060Y Multimedia audio matrix
10/07/2008US7433483 Narrow profile speaker configurations and systems
10/02/2008US20080243520 Audio coding
10/02/2008DE102007014372A1 Audio signal processing system for motor vehicles, has input for plus and minus path signal of symmetrical main signal and mixing element, by which main signal and supplementary signal, corrected by correction element, are coupled
10/01/2008EP1974587A1 Me thod and system for equalizing a loudspeaker in a room
10/01/2008EP1974348A1 Method and apparatus for processing a media signal
10/01/2008EP1974347A1 Method and apparatus for processing a media signal
10/01/2008EP1974346A1 Method and apparatus for processing a media signal
10/01/2008EP1974345A1 Method and apparatus for processing a media signal
10/01/2008EP1687809B1 Device and method for reconstruction a multichannel audio signal and for generating a parameter data record therefor
10/01/2008CN101278598A Acoustic signal processing device and acoustic signal processing method
10/01/2008CN100423613C Reproducing device for multiple sound channel signals
09/2008
09/30/2008US7430298 Sound field controller
09/25/2008WO2008113428A1 Method and apparatus for conversion between multi-channel audio formats
09/25/2008WO2008113427A1 Method and apparatus for enhancement of audio reconstruction
09/25/2008US20080232608 Audio/Video System
09/24/2008EP1972180A1 Decoding of binaural audio signals
09/24/2008EP1728410B1 A method and system for processing sound signals
09/24/2008EP1266469B1 Use of voice-to-remaining audio (vra) in consumer applications
09/23/2008US7428440 Method and apparatus for preserving matrix surround information in encoded audio/video
09/17/2008EP1971187A2 Array speaker apparatus
09/17/2008EP1969901A2 Personalized decoding of multi-channel surround sound
09/17/2008CN100420346C Multichannel active matrix sound reproduction with maximum lateral separation
09/10/2008EP1968348A2 Stereophonic sound output apparatus and early reflection generation method thereof
09/10/2008EP1968221A2 Communication system, communication apparatus and control method thereof
09/10/2008CN201114776Y An audio signal converter and audio signal transmission system using this converter
09/10/2008CN101263742A Audio coding
09/03/2008EP1964443A2 Low-complexity audio matrix decoder
09/03/2008EP1964442A1 Apparatus and method for synthesizing three output channels using two input channels
09/03/2008EP1844628B1 Device and method for activating an electromagnetic field synthesis renderer device with audio objects
09/03/2008EP1269306A4 Spatialized audio system for use in a geographical environment
09/03/2008CN101257740A Method and apparatus to reproduce multi-channel audio signal in multi-channel speaker system
09/02/2008CA2456298C A method of and apparatus for producing apparent multidimensional sound
09/02/2008CA2295505C Method and apparatus for encoding and decoding multiple audio channels at low bit rates
08/2008
08/27/2008CN101253810A Method and apparatus for encoding and decoding an audio signal
08/27/2008CN101253809A Method and apparatus for encoding and decoding an audio signal
08/27/2008CN101253808A Method and apparatus for encoding and decoding an audio signal
08/27/2008CN101253807A Method and apparatus for encoding and decoding an audio signal
08/27/2008CN101253806A Method and apparatus for encoding and decoding an audio signal
08/27/2008CN101253803A Voice output device and method, program, and room
08/21/2008US20080199023 Assembly, System and Method for Acoustic Transducers
08/20/2008EP1851997B1 Near-transparent or transparent multi-channel encoder/decoder scheme
08/20/2008EP1817938B1 A device and a method to process audio data, a computer program element and a computer-readable medium
08/20/2008CN101248483A Generation of multi-channel audio signals
08/13/2008EP1955574A2 Audio signal processing method and system
08/13/2008EP1800517B1 Device and method for controlling a public address system, and a corresponding public address system
08/13/2008CN101242686A A linear array control system and its linear array sound system
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