| Patents for H04S 5 - Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation (2,758) |
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| 09/12/2000 | US6118394 Circuit for obtaining an output signal having distributed frequencies around a frequency of an input signal |
| 08/29/2000 | US6111962 Reverberation system |
| 08/09/2000 | EP1025743A1 Utilisation of filtering effects in stereo headphone devices to enhance spatialization of source around a listener |
| 08/03/2000 | WO2000022880A3 Apparatus and method for synthesizing pseudo-stereophonic outputs from a monophonic input |
| 08/02/2000 | EP1024679A2 Method for decoding distorted radio signals in multichannel audio signals |
| 07/20/2000 | DE19900961A1 Verfahren und Vorrichtung zur Wiedergabe von Mehrkanaltonsignalen A method and apparatus for reproducing multi-channel audio |
| 07/19/2000 | EP1021063A2 Audio signal processing |
| 07/19/2000 | EP1021062A2 Method and apparatus for the reproduction of multi-channel audio signals |
| 07/13/2000 | DE19900819A1 Prodder for decoding multi-channel distorted radio signals by extracting spatial information from the data signal and recombining this with mono signal data |
| 07/04/2000 | US6084970 Mono-stereo conversion device, an audio reproduction system using such a device and a mono-stereo conversion method |
| 06/28/2000 | EP1014756A2 Method and apparatus for loudspeaker with positional 3D sound |
| 06/28/2000 | EP1013141A1 Method and device for reproducing a stereophonic audiosignal |
| 06/28/2000 | EP1013140A1 5-2-5 matrix encoder and decoder system |
| 06/28/2000 | EP1013018A1 Multichannel spectral mapping audio apparatus and method |
| 06/21/2000 | CN1257639A Audiochannel mixing |
| 06/14/2000 | CN1256851A Surround sound reproduction system, sound/visual reproduction system, surround signal processing unit and method for processing input surround signal |
| 06/06/2000 | US6072877 Three-dimensional virtual audio display employing reduced complexity imaging filters |
| 05/31/2000 | CN1053079C Equipment and method for producing multi-channel sound with two loudspeakers |
| 05/30/2000 | US6069962 Point source speaker system |
| 05/24/2000 | EP1003282A2 Integrated circuit for processing audio signal |
| 05/24/2000 | EP0788723B1 Method and apparatus for efficient presentation of high-quality three-dimensional audio |
| 05/23/2000 | US6067360 Apparatus for localizing a sound image and a method for localizing the same |
| 05/17/2000 | EP1001654A2 Sound signal mixing |
| 04/26/2000 | CN1251680A System of sharing objects having plurality of contents |
| 04/25/2000 | CA2011674C Electro-acoustic system |
| 04/20/2000 | WO2000022880A2 Apparatus and method for synthesizing pseudo-stereophonic outputs from a monophonic input |
| 04/20/2000 | WO2000022876A1 Point source speaker system |
| 04/20/2000 | DE19950319A1 Verfahren zum Synthetisieren eines dreidimensionalen Schallfeldes A method for synthesizing a three-dimensional sound field |
| 04/12/2000 | CN1250293A Decoding device and method for compressed multiple-track audio bit element flow |
| 04/05/2000 | EP0991297A2 3D woofer drive circuit |
| 03/30/2000 | WO2000018031A1 Method and device for developing a virtual speaker distant from the sound source |
| 03/30/2000 | CA2345336A1 Method and device for developing a virtual speaker distant from the sound source |
| 03/28/2000 | US6043838 View offset estimation for stereoscopic video coding |
| 03/14/2000 | US6038325 Speaker system for use in an automobile vehicle |
| 03/08/2000 | EP0984667A2 Method and apparatus for efficient presentation of high-quality three-dimensional audio |
| 02/15/2000 | US6026169 Sound image localization device |
| 02/09/2000 | CN1244094A 3D space sound effect processing system and method |
| 02/02/2000 | EP0976306A1 Surround sound reproduction system, sound/visual reproduction system, surround signal processing unit and method for processing an input surround signal |
| 02/02/2000 | EP0976305A1 A method of processing an audio signal |
| 01/18/2000 | US6016295 Audio system which not only enables the application of the surround sytem standard to special playback uses but also easily maintains compatibility with a surround system |
| 01/05/2000 | EP0968625A1 Audiochannel mixing |
| 01/05/2000 | CN1240565A Method and device for projecting sound sources onto loudspeakers |
| 12/29/1999 | EP0966865A2 Multidirectional audio decoding |
| 12/22/1999 | EP0965247A1 Multi-channel audio enhancement system for use in recording and playback and methods for providing same |
| 12/22/1999 | EP0965229A1 System of sharing objects having a plurality of contents |
| 12/21/1999 | US6005948 Audio channel mixing |
| 12/21/1999 | US6005946 Method and apparatus for generating a multi-channel signal from a mono signal |
| 12/15/1999 | EP0963682A1 Six-axis surround sound processor with improved matrix and cancellation control |
| 12/07/1999 | US5999630 Sound image and sound field controlling device |
| 12/01/1999 | EP0961523A1 Music spatialisation system and method |
| 11/25/1999 | WO1999033325A3 Surround signal processing apparatus and method |
| 11/24/1999 | EP0959644A2 Method of modifying a filter for implementing a head-related transfer function |
| 11/16/1999 | US5987142 System of sound spatialization and method personalization for the implementation thereof |
| 11/11/1999 | WO1999057941A1 Matrix-encoded surround-sound channels in a discrete digital sound format |
| 11/02/1999 | CA2158734C Passive surround sound circuit |
| 10/27/1999 | EP0951800A1 Six-axis surround sound processor with automatic balancing and calibration |
| 10/27/1999 | EP0689756B1 Plural-channel sound processing |
| 10/26/1999 | US5974156 Circuit arrangement for influencing the frequency response of a digital audio signal |
| 10/26/1999 | US5973555 Power amplifier apparatus |
| 10/19/1999 | US5970152 Audio enhancement system for use in a surround sound environment |
| 10/13/1999 | EP0949845A2 Qsound surround synthesis from stereo |
| 10/09/1999 | CA2268378A1 Qsound surround synthesis from stereo |
| 10/07/1999 | WO1999051062A1 Formulation of complex room impulse responses from 3-d audio information |
| 09/30/1999 | WO1999049574A1 Audio signal processing method and apparatus |
| 09/29/1999 | CN1230331A Recording and play-back two-channel system for providing holophonic reproduction of sounds |
| 09/08/1999 | CN1228237A Multichannel active matrix sound reproduction with maximum lateral separation |
| 09/02/1999 | WO1999034601A3 System of sharing objects having a plurality of contents |
| 09/01/1999 | EP0938832A1 Method and device for projecting sound sources onto loudspeakers |
| 08/31/1999 | CA2160840C Surround sound processor with improved control voltage generator |
| 08/25/1999 | CN1226786A View offset estimation for stereo scopic video coding |
| 08/19/1999 | WO1999041947A1 Surround sound reproduction system, sound/visual reproduction system, surround signal processing unit and method for processing an input surround signal |
| 08/04/1999 | EP0933006A1 Transaural stereo device |
| 08/04/1999 | EP0677235B1 Sound image manipulation apparatus for sound image enhancement |
| 08/03/1999 | CA2196779C Method and apparatus for spatially enhancing stereo and monophonic signals |
| 07/28/1999 | EP0643899B1 Stereophonic signal processor generating pseudo stereo signals |
| 07/15/1999 | WO1999035886A1 Pseudo-stereophony device |
| 07/14/1999 | CN1223064A Audio enhancement system for use in surround sound environment |
| 07/08/1999 | WO1999034643A1 Pc surround sound circuit |
| 07/08/1999 | WO1999034601A2 System of sharing objects having a plurality of contents |
| 07/01/1999 | WO1999033325A2 Surround signal processing apparatus and method |
| 06/30/1999 | CN1221283A Television set comprising loudspeakers and decoder with surround-sound audio signals |
| 06/24/1999 | WO1999031938A1 A method of processing an audio signal |
| 06/23/1999 | EP0923848A1 Multichannel active matrix sound reproduction with maximum lateral separation |
| 06/15/1999 | US5912976 System for processing at least four discrete audio signals |
| 06/08/1999 | US5910990 Apparatus and method for automatic equalization of personal multi-channel audio system |
| 06/02/1999 | EP0919109A1 Recording and play-back two-channel system for providing a holophonic reproduction of sounds |
| 06/01/1999 | US5909496 Speaker apparatus |
| 05/26/1999 | CN1217627A Acoustic-image positioning treatment apparatus and method thereof |
| 05/19/1999 | EP0917400A2 An apparatus for localizing a sound image and a method for localizing the same |
| 05/18/1999 | US5905222 Silent stringed instrument for producing electric sound from virtual sound source same as that of acoustic stringed instrument |
| 05/12/1999 | EP0915433A2 View offset estimation for steroscopic video coding |
| 04/21/1999 | EP0910226A2 Television set comprising loudspeakers and a decoder for surround-sound audio signals |
| 04/20/1999 | US5896358 Audio system which not only enables the application of the surround system standard to special playback uses but also easily maintains compatibility with a surround system |
| 03/30/1999 | US5889867 Stereophonic Reformatter |
| 03/30/1999 | CA2132763C Surround sound system |
| 03/25/1999 | WO1999014983A1 Utilisation of filtering effects in stereo headphone devices to enhance spatialization of source around a listener |
| 03/18/1999 | WO1999013683A1 Method and device for reproducing a stereophonic audiosignal |
| 03/17/1999 | CN1211156A Surounding voice inducing and feeding device for cinema earphone |
| 03/16/1999 | US5883962 Method and apparatus for spatially enhancing stereo and monophonic signals |
| 03/11/1999 | WO1999012386A1 5-2-5 matrix encoder and decoder system |