| Patents for H04S 1 - Two-channel systems (4,182) |
|---|
| 05/18/1995 | WO1995013690A1 Angle detector and audio playback apparatus using the detector |
| 05/17/1995 | EP0653897A2 Method and apparatus for generating audiospatial effects |
| 05/17/1995 | EP0653850A2 Circuit for recognizing adjacent channel interference |
| 05/17/1995 | EP0465460B1 Signal enhancement processor for stereo system |
| 05/13/1995 | CA2135721A1 Method and apparatus for generating audiospatial effects |
| 05/02/1995 | US5412731 Automatic stereophonic manipulation system and apparatus for image enhancement |
| 04/26/1995 | EP0649589A1 Adaptive audio systems and sound reproduction systems |
| 04/26/1995 | EP0478615B1 Polyphonic coding |
| 04/20/1995 | DE4335424A1 Stereo decoding circuit |
| 04/13/1995 | WO1995010167A1 Audio reproducing device |
| 04/13/1995 | WO1995010163A1 Loudspeaker system |
| 04/13/1995 | WO1995010138A1 Audio signal processor |
| 04/11/1995 | US5406022 Method and system for producing stereophonic sound by varying the sound image in accordance with tone waveform data |
| 04/05/1995 | CN1101202A Asymmeirical tranducing |
| 04/04/1995 | US5404406 Method for controlling localization of sound image |
| 03/23/1995 | WO1995008227A1 Process for determining the type of coding to be selected for coding at least two signals |
| 03/22/1995 | EP0434691B1 Improvements in or relating to sound reproduction systems |
| 03/21/1995 | US5400410 Signal separator |
| 03/21/1995 | US5400405 Audio image enhancement system |
| 03/16/1995 | DE4345171A1 Method for the determination of the type of coding to be selected for the coding of at least two signals |
| 03/15/1995 | EP0643547A2 Quantization apparatus |
| 03/15/1995 | EP0642719A1 Process for reducing data in the transmission and/or storage of digital signals from several interdependent channels. |
| 03/14/1995 | US5398286 System for enhancing an analog signal |
| 03/09/1995 | DE4328252A1 Device for the wireless transmission of digital data, particularly audio data, with the aid of infrared light on headphones |
| 03/01/1995 | EP0641143A2 Method for simulating spatial and/or sonic impression |
| 02/28/1995 | US5394477 Microprocessor controlled multiple channel VTR configuration of an audio follow video mixer |
| 02/28/1995 | US5394474 Echo attaching circuit and audio device using the same |
| 02/23/1995 | WO1995005724A1 Spatial sound reproduction system |
| 02/22/1995 | EP0639317A1 Loudspeaker system |
| 02/15/1995 | EP0639038A2 Circuit for converting a stereo signal |
| 02/08/1995 | EP0637753A2 Circuit device for detecting a frequency in a composite signal |
| 02/01/1995 | EP0637191A2 Surround signal processing apparatus |
| 02/01/1995 | EP0637189A2 Audio signal processing circuit |
| 01/31/1995 | US5386478 Sound system remote control with acoustic sensor |
| 01/31/1995 | US5386082 Method of detecting localization of acoustic image and acoustic image localizing system |
| 01/26/1995 | DE4424192A1 Electronic device for generating three-dimensional acoustic effects |
| 01/24/1995 | US5384851 Method and apparatus for controlling sound localization |
| 01/19/1995 | WO1995002288A1 Reduction of background noise for speech enhancement |
| 01/10/1995 | US5381482 Sound field controller |
| 12/27/1994 | US5377272 Switched signal processing circuit |
| 12/27/1994 | CA2002015C Perceptual coding of audio signals |
| 12/15/1994 | DE4326524C1 Circuit arrangement for establishing the presence or absence of at least one frequency of known value in an input signal consisting of a plurality of frequencies |
| 12/13/1994 | US5373562 Signal processor for sterophonic signals |
| 12/07/1994 | EP0627739A2 Recording/reproducing apparatus for disc-shaped recording medium |
| 12/06/1994 | US5371799 Apparatus for processing an input audio signal |
| 11/29/1994 | US5369710 Sound field correcting apparatus and method |
| 11/24/1994 | WO1994027416A1 Stereophonic reproduction method and apparatus |
| 11/10/1994 | DE4331376C1 Method for determining the type of encoding to selected for the encoding of at least two signals |
| 11/09/1994 | EP0624050A2 Audio apparatus |
| 11/09/1994 | EP0624047A1 Asymmetrical transducing |
| 11/09/1994 | CN1026547C Surround sound effect control device |
| 10/26/1994 | EP0621737A1 Stereo ultradirectional microphone apparatus |
| 10/17/1994 | EP0639317A4 Loudspeaker system. |
| 09/29/1994 | WO1994022278A1 Plural-channel sound processing |
| 09/29/1994 | DE4310105A1 Stereophonic sound processor |
| 09/29/1994 | CA2158451A1 Plural-channel sound processing |
| 09/28/1994 | EP0617405A1 Sound field control device |
| 09/15/1994 | WO1994020960A1 Digital speech sound reproduction apparatus and digital speech sound edition apparatus |
| 09/14/1994 | EP0615399A1 Sound field controller |
| 09/14/1994 | EP0615397A2 Noise suppression circuit for radio transceiver microphone |
| 09/14/1994 | EP0615387A1 Moving picture encoder |
| 09/13/1994 | US5347499 Circuit for selectively setting a monaural playback channel in a stereo audio apparatus |
| 09/12/1994 | CA2118767A1 Radio transceiver |
| 09/07/1994 | CN1091889A Stereophonic manipulation apparatus and method for sound image enhancement |
| 08/30/1994 | US5343534 Sequential audio switcher |
| 08/30/1994 | US5343531 Audio reproducing apparatus |
| 08/23/1994 | US5341457 Perceptual coding of audio signals |
| 08/18/1994 | DE4403723A1 Microphone for a video camera |
| 08/17/1994 | EP0610282A1 Process for simultaneously transmitting audio signals from n-signal sources |
| 08/09/1994 | US5337363 Method for generating three dimensional sound |
| 08/03/1994 | EP0484354B1 Stereo headphone for the "in front" location of auditory events generated by stereo headphones |
| 07/26/1994 | US5333202 Multidimensional stereophonic sound reproduction system |
| 07/26/1994 | US5333200 Head diffraction compensated stereo system with loud speaker array |
| 07/26/1994 | US5333199 Digital signal processor for simultaneously processing left and right signals |
| 07/21/1994 | WO1994016538A1 Sound image manipulation apparatus and method for sound image enhancement |
| 07/21/1994 | CA2153062A1 Sound image manipulation apparatus and method for sound image enhancement |
| 06/22/1994 | CN1088379A Control circuit for a spatial stereo expander |
| 05/31/1994 | CA1329911C Sound imaging method and apparatus |
| 05/11/1994 | WO1994010816A1 Methods and apparatus for producing directional sound |
| 05/11/1994 | WO1994010815A1 Method for generating three-dimensional sound |
| 04/20/1994 | CN1024312C Apparatus & method thereof for improvement of stereophonic sound |
| 04/19/1994 | US5305386 Apparatus for expanding and controlling sound fields |
| 04/13/1994 | CN1085375A Switched signal processing circuit |
| 03/22/1994 | US5297209 System for calibrating sound field |
| 03/17/1994 | WO1994006246A1 Moving picture encoder |
| 03/17/1994 | WO1994001981A3 Adaptive audio systems and sound reproduction systems |
| 03/02/1994 | EP0584719A1 Control circuit for a spatial stereo expander |
| 03/02/1994 | EP0584718A1 Switched signal processing circuit |
| 02/10/1994 | DE4326746A1 Stereo loudspeaker vol. control equipment responsive to ambient noise - provides feedback from both audio channel amplifiers via adaptive digital filters for subtraction from noise microphone signal |
| 01/27/1994 | DE4323015A1 Stereophonic radio receiver with reception strength detector - controls distribution between right and left channels according to detected demodulated signal level |
| 01/26/1994 | EP0325650B1 Extended imaging split mode loudspeaker system |
| 01/20/1994 | WO1994001981A2 Adaptive audio systems and sound reproduction systems |
| 01/19/1994 | CN1080878A Electronic gaming device with pseude-stereophonic sound generating cap abilities |
| 01/11/1994 | US5278909 System and method for stereo digital audio compression with co-channel steering |
| 12/28/1993 | US5274708 Digital stereo sound enhancement unit and method |
| 12/23/1993 | WO1993026134A1 Stereophonic sound reproduction device using several loudspeakers in each channel |
| 12/23/1993 | CA2137695A1 Strereophonic sound reproduction device using several loudspeakers in each channel |
| 12/21/1993 | US5272757 Multi-dimensional reproduction system |
| 12/21/1993 | US5272756 Method and apparatus for determining phase correlation of a stereophonic signal |
| 12/15/1993 | EP0574145A1 Encoding and decoding of audio information |