| Patents for H04S 1 - Two-channel systems (4,182) |
|---|
| 07/28/2004 | EP1440603A2 Bass frequency amplifying apparatus |
| 07/28/2004 | CN1516520A Xiafula audible signal processing circuit, wave filter and method |
| 07/22/2004 | US20040142718 Mobile communication terminal having a three-dimensional surround sound effect and its control method |
| 07/22/2004 | US20040141619 Method of generating a left modified and a right modified audio signal for a stereo system |
| 07/22/2004 | DE29724831U1 Sound generation method for music space or concert hall - has two sound sources positioned at diametrically opposite points with further sound source between them |
| 07/21/2004 | CN2627781Y Bus type intelligent sounding unit |
| 07/21/2004 | CN1158903C Acoustic image positioning device |
| 07/21/2004 | CN1158899C Playback device mounted on vehicle |
| 07/20/2004 | US6766028 Headtracked processing for headtracked playback of audio signals |
| 07/20/2004 | US6765802 Audio sound quality enhancement apparatus |
| 07/15/2004 | WO2004058059A2 Audio reproduction apparatus, feedback system and method |
| 07/15/2004 | WO2004028204A3 Generation of a sound signal |
| 07/15/2004 | US20040138874 Audio signal processing |
| 07/15/2004 | US20040136554 Equalization of the output in a stereo widening network |
| 07/15/2004 | US20040136551 Audio apparatus |
| 07/15/2004 | US20040136540 Sound apparatus, method of changing sound characteristics, and data recording medium on which a sound correction program |
| 07/15/2004 | US20040136538 Method and system for simulating a 3d sound environment |
| 07/14/2004 | EP1437915A2 Audio apparatus with main speakers and sound effekt speakers |
| 07/14/2004 | EP1437713A1 Encoding apparatus and method; decoding apparatus and method and recording medium recording apparatus and method |
| 07/14/2004 | CN1512823A Sound device, method for changing sound property |
| 07/13/2004 | US6763275 Method for processing and reproducing audio signal at desired sound quality, reduced data volume or adjusted output level, apparatus for processing audio signal with sound quality control information or test tone signal or at reduced data volume, recording medium for recording audio signal with sound quality control information or test tone signal or at reduced data volume, and apparatus for reproducing audio signal at desired sound quality, reduced data volume or adjusted output level |
| 07/13/2004 | US6763115 Processing method for localization of acoustic image for audio signals for the left and right ears |
| 07/08/2004 | WO2003085824B1 Sound level limiter for electro-acoustic devices |
| 07/08/2004 | US20040131338 Method of reproducing audio signal, and reproducing apparatus therefor |
| 07/08/2004 | US20040131205 Device for monitoring musical performances and/or audio signals from video games or similar |
| 07/08/2004 | US20040131196 Sound processing |
| 07/07/2004 | CN1510662A Compressible stereo audio frequency encoding/decoding method and device |
| 07/06/2004 | US6760447 Sound recording and reproduction systems |
| 07/06/2004 | US6760446 Point source speaker system |
| 07/06/2004 | US6760050 Virtual three-dimensional sound pattern generator and method and medium thereof |
| 07/01/2004 | US20040125967 Base management systems |
| 07/01/2004 | US20040125241 Audio information transforming method, audio information transforming program, and audio information transforming device |
| 06/30/2004 | EP1433361A2 Sound reproduction systems |
| 06/30/2004 | CN1509118A Directional electro-acoustic convertor |
| 06/29/2004 | US6757398 System and method for sensing a sound system |
| 06/24/2004 | WO2004054321A1 Audio signal reproducing method and reproducing apparatus |
| 06/23/2004 | EP1430750A2 Method and device for selecting a sound algorithm |
| 06/23/2004 | EP1430749A2 Audio reproducing device |
| 06/23/2004 | CN1507701A Parametric virtual speaker and surround-sound system |
| 06/22/2004 | US6754352 Sound field production apparatus |
| 06/22/2004 | US6754350 Surround reproducing circuit |
| 06/17/2004 | WO2004052052A2 Method and apparatus for processing audio signals from a bitstream |
| 06/17/2004 | WO2004030409A3 Method for optimising an audio signal |
| 06/17/2004 | US20040114769 Method of modifying low frequency components of a digital audio signal |
| 06/17/2004 | CA2508220A1 Method and apparatus for processing two or more initially decoded audio signals received or replayed from a bitstream |
| 06/16/2004 | CN1154395C Acoustics for digital TV set |
| 06/10/2004 | WO2004049759A1 Equalisation of the output in a stereo widening network |
| 06/09/2004 | EP1427254A2 Electroacoustical transducing with low frequency aufmenting devices |
| 06/09/2004 | EP1427253A2 Directional electroacoustical transducing |
| 06/09/2004 | EP1427252A1 Method and apparatus for processing audio signals from a bitstream |
| 06/09/2004 | EP1425936A2 Device for playing back audio signals and method for modifying filter data |
| 06/09/2004 | EP1425935A1 Multiple signal carrier transmission apparatus and method |
| 06/09/2004 | CN1153504C Audio system comprising audio signal processing circuit |
| 06/08/2004 | US6747920 Information reproduction apparatus and information reproduction |
| 06/08/2004 | US6747678 Audio system, its control method and storage medium |
| 06/03/2004 | WO2004047489A1 Audio based data representation apparatus and method |
| 06/03/2004 | WO2004047488A2 Receiver |
| 06/03/2004 | WO2004028205A3 Sound reproduction system, program and data carrier |
| 06/03/2004 | WO2003103336A3 Method and system for audio imaging |
| 06/03/2004 | WO2003063346A3 A method for decreasing the dynamic range of a signal and electronic circuit |
| 06/03/2004 | US20040105559 Electroacoustical transducing with low frequency augmenting devices |
| 06/03/2004 | US20040105550 Directional electroacoustical transducing |
| 06/02/2004 | EP1238567B1 Method for fixing the hifi position of an audio system |
| 06/01/2004 | US6744487 Producing a soundtrack for moving picture sequences |
| 06/01/2004 | US6744276 Serial digital audio data port with multiple functional configurations |
| 05/26/2004 | EP1422969A2 Method and apparatus for reproducing audio signal |
| 05/26/2004 | CN1151704C Apparatus and method for localizing sound image |
| 05/25/2004 | US6741965 Differential stereo using two coding techniques |
| 05/25/2004 | US6741961 Low power audio processor that multiplexes component distribution signals |
| 05/25/2004 | US6741711 Method of synthesizing an approximate impulse response function |
| 05/25/2004 | US6741706 Audio signal processing method and apparatus |
| 05/21/2004 | WO2003015466B1 Improvements in relation to sound reproduction |
| 05/20/2004 | US20040098150 Audio signal processing apparatus and related computer program |
| 05/19/2004 | CN2617110Y Music player |
| 05/19/2004 | CN1498035A Voice-frequency information conversion method, program and equipment |
| 05/18/2004 | US6738479 Method of audio signal processing for a loudspeaker located close to an ear |
| 05/13/2004 | US20040091121 Headphone driving circuit |
| 05/13/2004 | US20040091119 Method for measurement of head related transfer functions |
| 05/12/2004 | EP1417679A1 Sound intelligibility enhancement using a psychoacoustic model and an oversampled filterbank |
| 05/12/2004 | CN1496664A Method for at least two audio signals |
| 05/12/2004 | CN1495070A Audio device with multiple selection function and sound signal controller |
| 05/12/2004 | CN1149900C Audio signal processor and audio device |
| 05/12/2004 | CN1149899C Intensifying system for dual-channel sound |
| 05/11/2004 | US6735314 Expanded stereophonic circuit with tonal compensation |
| 05/06/2004 | WO2004039127A2 Embedded data signaling |
| 05/06/2004 | WO2004039123A1 Dynamic binaural sound capture and reproduction |
| 05/06/2004 | WO2003085824A3 Sound level limiter for electro-acoustic devices |
| 05/06/2004 | US20040086128 Method and apparatus for creating a virtual third channel in a two-channel apmlifier |
| 05/06/2004 | EP1416767A1 Device for monitoring musical performances and/or audio signals from video games or similar |
| 05/06/2004 | EP1415508A2 Device and method for simulation of the presence of one or more sound sources in virtual positions in three-dimensional acoustic space |
| 05/06/2004 | CA2502585A1 Dynamic binaural sound capture and reproduction |
| 05/05/2004 | CN1494812A Headphone-use stereophonic device and voice signal processing program |
| 05/05/2004 | CN1148995C Audible signal processing circuit, surrounding audible signal processing apparatus and method |
| 05/04/2004 | US6731759 Audio signal reproduction device |
| 04/29/2004 | WO2004036954A1 Apparatus and method for adapting audio signal according to user's preference |
| 04/28/2004 | EP1414273A1 Embedded data signaling |
| 04/28/2004 | EP1413171A2 Method for at least two audio signals |
| 04/28/2004 | CN1148004C Data compression/expansion on plurality of digital information signals |
| 04/22/2004 | WO2004034736A1 Multispeaker sound imaging system |
| 04/22/2004 | WO2004008633A3 A stereo signal processing apparatus |