| 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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| 05/19/2004 | CN1498035A Voice-frequency information conversion method, program and equipment |
| 05/13/2004 | US20040091118 5-2-5 Matrix encoder and decoder system |
| 05/12/2004 | CN1496192A Laudspeaker unit and its assembly |
| 05/12/2004 | CN1496191A Laudspeaker combined component |
| 05/12/2004 | CN1149899C Intensifying system for dual-channel sound |
| 05/06/2004 | US20040086132 Audio apparatus |
| 05/06/2004 | US20040086130 Multi-channel sound processing systems |
| 05/06/2004 | US20040086129 Method of reproducing multichannel audio sound via several real and at least one virtual speaker |
| 05/06/2004 | EP1416768A2 Audio apparatus |
| 05/05/2004 | CN1494812A Headphone-use stereophonic device and voice signal processing program |
| 05/05/2004 | CN1494356A Multi audio track active matrix audio replay having maximum lateral dissociation |
| 04/28/2004 | CN1148106C Decoding device and method for compressed multiple-track audio bit element flow |
| 04/22/2004 | WO2004008633A3 A stereo signal processing apparatus |
| 04/21/2004 | EP1410687A1 Efficient and scalable parametric stereo coding for low bitrate applications |
| 04/21/2004 | EP1410686A2 Audio channel translation |
| 04/21/2004 | EP1212923B1 Method and apparatus for generating a second audio signal from a first audio signal |
| 04/20/2004 | US6724979 System of sharing objects having a plurality of contents |
| 04/14/2004 | EP1040466B1 Surround signal processing apparatus and method |
| 04/14/2004 | CN1146299C Apparatus and method for synthesizing pseudo-stereophonic outputs from monophonic input |
| 04/14/2004 | CN1146298C Output signal loop circuit capable of obtaining output signal different in freqnence with imput signals |
| 04/13/2004 | US6721425 Sound signal mixing |
| 04/08/2004 | WO2003073791A3 Method and device for control of a unit for reproduction of an acoustic field |
| 04/01/2004 | WO2004028205A2 Sound reproduction system, program and data carrier |
| 04/01/2004 | WO2004028204A2 Generation of a sound signal |
| 04/01/2004 | DE20320150U1 Cordless music player has an RF module for generation of an FM signal that can be transmitted to music playback devices, such as radios, to permit cordless listening without the inconvenience of cables |
| 03/31/2004 | CN1486531A Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals |
| 03/25/2004 | WO2003094369A3 Multi-channel downmixing device |
| 03/25/2004 | WO2002063925A8 Audio channel translation |
| 03/25/2004 | US20040057590 Method for processing sound effects in a notebook computer |
| 03/23/2004 | US6711266 Surround sound channel encoding and decoding |
| 03/17/2004 | CN1142704C Acoustic-image positioning treatment apparatus and method thereof |
| 03/16/2004 | US6707918 Formulation of complex room impulse responses from 3-D audio information |
| 03/11/2004 | WO2003094396A3 Discrete surround audio system for home and automotive listening |
| 03/10/2004 | EP1396173A2 Method of generating a left modified and a right modified audio signal for a stereo system |
| 03/04/2004 | WO2004019656A2 Audio channel spatial translation |
| 03/04/2004 | WO2004019654A1 Automatic wind noise reduction circuit and automatic wind noise reduction method |
| 03/04/2004 | CA2494454A1 Audio channel spatial translation |
| 03/03/2004 | EP1393592A2 Data-driven software architecture for digital sound processing and equalization |
| 02/26/2004 | US20040037425 Method for realizing virtual multi-channel output by spectrum analysis |
| 02/25/2004 | CN1477903A Multichannel audio-frequecy system and electronic equipment |
| 02/25/2004 | CN1477731A connection parts for electrical cable |
| 02/24/2004 | US6697491 5-2-5 matrix encoder and decoder system |
| 02/19/2004 | WO2002063925A3 Audio channel translation |
| 02/19/2004 | US20040032960 Multichannel downmixing device |
| 02/18/2004 | EP1389892A2 Sound processing system using distortion limiting techniques |
| 02/18/2004 | CN1476736A Remote control apparatus and receiver and audio system |
| 02/18/2004 | CN1476667A Power amplification for parametric loudspeakers |
| 02/12/2004 | WO2004013853A1 Information recoding medium, information recording device and method, information reproduction device and method, information recording/reproduction device and method, computer program, and data structure |
| 02/05/2004 | US20040022392 Sound detection and localization system |
| 02/04/2004 | EP1387601A2 Sound processing system with adaptive mixing of active matrix decoding and passive matrix processing |
| 02/04/2004 | EP1386415A1 Parametric virtual speaker and surround-sound system |
| 02/04/2004 | CN1473451A Portable multi-channel amplifier |
| 02/04/2004 | CN1137603C Play-back two-channel system for providing holophonic reproduction of sounds |
| 01/31/2004 | CA2436388A1 Sound processing system using distortion limiting techniques |
| 01/28/2004 | CN1471340A Multi acoustic source circulating audio-frequency device |
| 01/27/2004 | US6684060 Digital wireless premises audio system and method of operation thereof |
| 01/22/2004 | WO2004008805A1 Audio coding |
| 01/22/2004 | WO2004008633A2 A stereo signal processing apparatus |
| 01/22/2004 | WO2003061344A3 Multichannel echo canceller system using active audio matrix coefficients |
| 01/22/2004 | US20040015983 Method and apparatus for a data receiver and controller for the facilitation of an enhanced television viewing environment |
| 01/22/2004 | US20040013271 Method and system for recording and reproduction of binaural sound |
| 01/21/2004 | CN1469684A Method and apparatus for generating multi-sound channel sound |
| 01/15/2004 | US20040008847 Method and apparatus for producing multi-channel sound |
| 01/14/2004 | EP1381254A2 Method and apparatus for producing multi-channel sound |
| 01/14/2004 | CN2599886Y Digital voice mixing device |
| 01/08/2004 | WO2003075609A3 User controlled multi-channel audio conversion system |
| 01/08/2004 | US20040005066 Apparatus and method for synthesizing pseudo-stereophonic outputs from a monophonic input |
| 01/08/2004 | US20040005065 Sound event detection system |
| 01/08/2004 | US20040005064 Sound event detection and localization system |
| 01/07/2004 | CN1134207C Pseudo-stereophony device |
| 01/02/2004 | EP1377124A2 Multi-source surround audio apparatus |
| 01/02/2004 | EP1377123A1 Equalization for audio mixing |
| 01/02/2004 | EP1377122A2 Sound data delay unit |
| 01/02/2004 | EP1376538A1 Hybrid multi-channel/cue coding/decoding of audio signals |
| 01/02/2004 | EP1374637A2 A method of synthesising an approximate impulse response function |
| 01/01/2004 | US20040001596 Sound data delay unit |
| 01/01/2004 | US20040001403 Multi-source surround audio apparatus |
| 12/31/2003 | WO2003071827A3 Compact surround-sound system |
| 12/25/2003 | US20030236583 Hybrid multi-channel/cue coding/decoding of audio signals |
| 12/25/2003 | US20030235317 Equalization for audio mixing |
| 12/24/2003 | WO2003026350A3 Audio distributor |
| 12/18/2003 | WO2003104924A2 Acoustical virtual reality engine and advanced techniques for enhancing delivered sound |
| 12/18/2003 | CA2488689A1 Acoustical virtual reality engine and advanced techniques for enhancing delivered sound |
| 12/17/2003 | EP1371267A2 Method of reproducing multichannel sound using real and virtual speakers |
| 12/17/2003 | CN2593510Y Earphone virtual circulating sound effect converter |
| 12/11/2003 | WO2003030588A3 Method and device for selecting a sound algorithm |
| 12/04/2003 | WO2002098172A3 Method of generating a left modified and a right modified audio signal for a stereo system |
| 12/04/2003 | US20030223589 Method for converting two-channel audio system into multichannel audio system and an audio processor thereof |
| 12/03/2003 | EP1366639A2 Surround sound system |
| 12/03/2003 | EP1366565A2 Dynamic allocation of power supplied by a power supply and frequency agile spectral filtering of signals |
| 12/02/2003 | CA2118916C Process for reducing data in the transmission and/or storage of digital signals from several dependent channels |
| 11/27/2003 | WO2002091798A3 Data-driven software architecture for digital sound processing and equalization |
| 11/27/2003 | US20030219130 Coherence-based audio coding and synthesis |
| 11/26/2003 | EP1365629A1 Headphone-use stereophonic device and voice signal processing program |
| 11/26/2003 | CN1459214A Method of reproducing multichannel audio sound via several real and at least one virtual speaker |
| 11/26/2003 | CN1129346C Method and device for producing multi-way sound channel signal from single sound signal |
| 11/20/2003 | WO2003096746A1 Audio apparatus and its reproduction program |
| 11/19/2003 | CN1457216A Digital set style echo effect decoder |
| 11/19/2003 | CN1457215A Echo effect output signal generator of earphone |
| 11/18/2003 | US6650755 Voice-to-remaining audio (VRA) interactive center channel downmix |