| Patents for H04S 1 - Two-channel systems (4,182) |
|---|
| 04/22/2004 | WO2003034781A3 Bass frequency amplifying apparatus |
| 04/22/2004 | US20040076301 Dynamic binaural sound capture and reproduction |
| 04/22/2004 | DE4340012B4 Demodulator Demodulator |
| 04/21/2004 | EP1410687A1 Efficient and scalable parametric stereo coding for low bitrate applications |
| 04/21/2004 | EP1410594A2 Automotive storage and playback device and method for using the same |
| 04/20/2004 | US6725111 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 |
| 04/14/2004 | EP1408718A1 Sound image localizer |
| 04/14/2004 | EP1040466B1 Surround signal processing apparatus and method |
| 04/14/2004 | CN1489356A Synchronous broadcasting of media data package |
| 04/14/2004 | CN1145894C Encoding method and apparatus |
| 04/13/2004 | US6721426 Speaker device |
| 04/08/2004 | WO2004030410A1 Method for processing audio signals and audio processing system for applying this method |
| 04/08/2004 | WO2004030409A2 Method for optimising an audio signal |
| 04/08/2004 | WO2004030404A1 5.1channel digital surround earphone |
| 04/08/2004 | US20040066937 Multispeaker sound imaging system |
| 04/08/2004 | DE10341792A1 Stereophonie-Gerät mit Mehrfachschaltfunktion und Gerät zum Steuern eines Tonsignals Stereophonic device with multiple switching function and device for controlling an audio signal |
| 04/07/2004 | CN2610594Y Loudspeaker box |
| 04/06/2004 | US6718039 Acoustic correction apparatus |
| 04/01/2004 | WO2004028205A2 Sound reproduction system, program and data carrier |
| 04/01/2004 | WO2004028204A2 Generation of a sound signal |
| 04/01/2004 | WO2004027642A2 Method and system for processing a sound field representation |
| 04/01/2004 | WO2003001848A3 Device for playing back audio signals and method for modifying filter data |
| 03/31/2004 | EP1402755A2 Method and apparatus to create a sound field |
| 03/31/2004 | CN1486120A 5.1 channel digital circulating earphone |
| 03/31/2004 | CN1144415C Synchronization device |
| 03/30/2004 | US6714796 Mobile communication terminal device |
| 03/30/2004 | US6714652 Dynamic decorrelator for audio signals |
| 03/25/2004 | WO2004025829A1 A stereophonic apparatus having multiple switching function and an apparatus for controlling sound signal |
| 03/25/2004 | WO2003094369A3 Multi-channel downmixing device |
| 03/24/2004 | EP1401243A1 Method for optimizing an audio signal |
| 03/24/2004 | CN1484395A Bus type long distance broadcasting unit |
| 03/24/2004 | CN1484394A Bus type intelligent audio unit |
| 03/23/2004 | US6711265 Centralizing of a spatially expanded stereophonic audio image |
| 03/23/2004 | CA2257444C Method and apparatus for localization of an acoustic source |
| 03/17/2004 | EP1398931A1 Synchronous play-out of media data packets |
| 03/17/2004 | CN1142705C Low bit-rate spatial coding method and system, and decoder and decoding method for the system |
| 03/17/2004 | CN1142704C Acoustic-image positioning treatment apparatus and method thereof |
| 03/11/2004 | WO2004021686A2 Telecommunication terminal comprising a memory for storing acoustic effect data |
| 03/11/2004 | US20040049304 Method and apparatus for digital signal communication between equalizer and surround sound systems |
| 03/11/2004 | DE10239588A1 Telekommunikationsendgerät mit einer Speichereinrichtung zur Speicherung von Akustikeffekt-Daten Telecommunications terminal having a memory means for storing acoustic effect data |
| 03/10/2004 | EP1397021A1 Vehicle-mounted stereophonic sound field reproducer/silencer |
| 03/10/2004 | EP1396173A2 Method of generating a left modified and a right modified audio signal for a stereo system |
| 03/10/2004 | CN1481197A Head wearing type stereo acoustics |
| 03/10/2004 | CN1480940A Recording medium for recording data compressed compound signal |
| 03/04/2004 | US20040044427 Method for transmission of audio signals |
| 03/03/2004 | EP1395081A1 Vehicle-mounted stereophonic sound field reproducer |
| 03/02/2004 | US6700980 Method and device for synthesizing a virtual sound source |
| 02/26/2004 | WO2003103337A3 Methods and apparatus for sub-harmonic generation, stereo expansion and distortion |
| 02/26/2004 | US20040037442 Synchronised binaural hearing system |
| 02/25/2004 | EP1390702A2 Method of interacting with the acoustical modal structure of a room |
| 02/25/2004 | EP0571635B1 Frequency characteristic compensation apparatus |
| 02/25/2004 | CN1478371A 音频信号处理装置 Audio signal processing means |
| 02/25/2004 | CN1477901A Automatic muting sound system when the handset in used for communicatoin |
| 02/24/2004 | US6696633 Electronic tone generating apparatus and signal-processing-characteristic adjusting method |
| 02/19/2004 | WO2003012579A3 Automotive storage and playback device and method using the same |
| 02/19/2004 | US20040032960 Multichannel downmixing device |
| 02/19/2004 | US20040032955 Sound image control system |
| 02/18/2004 | CN1476599A Encodding apparatus and method, decoding apparatus and method, and recoding medium recoding apparatus and method |
| 02/18/2004 | CN1139300C Method and system for processing audio surround signal |
| 02/12/2004 | WO2004014105A1 Audio processing system |
| 02/12/2004 | WO2002091799A3 System for transitioning from stereo to simulated surround sound |
| 02/12/2004 | US20040028248 Mixing signal-path setting apparatus and program |
| 02/12/2004 | US20040028126 Encoding apparatus and method, decoding apparatus and method, and recording medium recording apparatus and method |
| 02/10/2004 | US6690799 Stereo signal processing apparatus |
| 02/05/2004 | WO2003086007A3 Audio distribution |
| 02/05/2004 | US20040023697 Sound reproducing system and method for portable terminal device |
| 02/05/2004 | US20040022398 Method and apparatus for reducing noise using pre-recorded information on a semiconductor memory |
| 02/05/2004 | US20040021619 Head-mounted audio/video playback 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 | CN1137603C Play-back two-channel system for providing holophonic reproduction of sounds |
| 02/03/2004 | CA2326495C Technique for parametric coding of a signal containing information |
| 01/28/2004 | CN1471339A Method and apparatus of sound digitalized ransmission for acoustic front and rear stages |
| 01/28/2004 | CN1136759C Audio signal controller and reproducing device comprising the same |
| 01/28/2004 | CN1136758C Audio surround signal processing, transmitting, and receiving system, recording device and its method |
| 01/27/2004 | US6683962 Method and system for driving speakers with a 90 degree phase shift |
| 01/27/2004 | US6683959 Stereophonic device and stereophonic method |
| 01/22/2004 | WO2004008806A1 Audio coding |
| 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 | WO2003049497A3 Circuit and method for enhancing a stereo signal |
| 01/22/2004 | US20040015252 Audio signal processing device |
| 01/22/2004 | US20040013278 Sound image localization signal processor |
| 01/22/2004 | US20040013271 Method and system for recording and reproduction of binaural sound |
| 01/22/2004 | DE10228723A1 Verfahren zur Bewertung der Empfangsqualität eines Stereorundfunkempfängers und Stereorundfunkempfänger Method for evaluating the reception quality of a stereo radio receiver and stereo radio receiver |
| 01/21/2004 | CN1135904C Audio-video location processing device |
| 01/20/2004 | US6681018 Audio signal processor and audio device |
| 01/15/2004 | WO2004006625A1 Audio processing |
| 01/15/2004 | WO2004006624A1 Sound source spatialization system |
| 01/15/2004 | WO2003063547A3 Method for reducing the noise in a stereo broadcast radio receiver, and stereo broadcast radio receiver |
| 01/15/2004 | US20040010331 Audio signal processing device |
| 01/15/2004 | US20040008615 Audio decoding method and apparatus which recover high frequency component with small computation |
| 01/15/2004 | DE10253987A1 Aufzeichnung, Wiedergabe, Sendung und Empfang von Audiosignalen, insbesondere von Musik Recording, reproduction, transmission and reception of audio signals, specifically music |
| 01/15/2004 | CA2490501A1 Sound source spatialization system |
| 01/14/2004 | EP1380189A2 Sound processing |
| 01/14/2004 | EP1380188A1 Method and circuit for headset listening of an audio recording |
| 01/14/2004 | CN1468029A 声音映像控制系统 Sound Image Control System |
| 01/14/2004 | CN1467703A Audio decoding method and apparatus which recover high frequency component with small computation |
| 01/13/2004 | US6677951 Entertainment apparatus having compatibility and computer system |