| Patents for H04S 3 - Systems employing more than two channels, e.g. quadraphonic (4,597) |
|---|
| 09/15/2004 | EP1457092A1 Method for improving spatial perception in virtual surround |
| 09/15/2004 | EP1380189B1 Sound processing |
| 09/13/2004 | CA2690511A1 Networked sound masking system with centralized sound masking generation |
| 09/10/2004 | WO2004077884A1 A method for reproducing natural or modified spatial impression in multichannel listening |
| 09/10/2004 | WO2004077883A1 Stereo signal extracting circuit and stereo playback apparatus using the same |
| 09/10/2004 | WO2004054313A3 Personalized surround sound headphone system |
| 09/09/2004 | US20040175001 Circuit and program for processing multichannel audio signals and apparatus for reproducing same |
| 09/08/2004 | EP1455554A2 Circuit and program for processing multichannel audio signals and apparatus for reproducing same |
| 09/08/2004 | CN1528105A Method of generating a left modified and a right modified audio signal for a stereo system |
| 09/07/2004 | US6788789 Phase conversion surround circuitry |
| 09/02/2004 | WO2003094396A8 Discrete surround audio system for home and automotive listening |
| 09/02/2004 | DE202004009063U1 Sound reproduction system for multi-channel transmission uses multiple loudspeaker units in preset positions in a room |
| 09/02/2004 | DE10305820A1 Vorrichtung und Verfahren zum Bestimmen einer Wiedergabeposition Apparatus and method for determining a reproducing position |
| 08/26/2004 | WO2004073352A1 Device and method for determining a reproduction position |
| 08/25/2004 | CN1524400A Efficient and scalable parametric stereo coding for low bitrate applications |
| 08/25/2004 | CN1524399A Audio channel translation |
| 08/24/2004 | US6782111 Multiple voicecoil and driver transducing |
| 08/24/2004 | US6781977 Wideband CDMA mobile equipment for transmitting multichannel sounds |
| 08/24/2004 | US6781933 Pseudo multi-channel stereo play-back |
| 08/19/2004 | WO2004051624A3 Method for describing the composition of audio signals |
| 08/18/2004 | EP0923848A4 Multichannel active matrix sound reproduction with maximum lateral separation |
| 08/12/2004 | WO2004068463A2 Method and device for controlling a reproduction unit using a multi-channel signal |
| 08/12/2004 | WO2004052052A3 Method and apparatus for processing audio signals from a bitstream |
| 08/12/2004 | US20040156512 Audio system and method |
| 08/12/2004 | DE202004007983U1 Home cinema sound system has loudspeakers in circle on adjustable stands at head height around user head |
| 08/11/2004 | CN1161889C Appts. and method of digital multiple data information signals and decoder thereof |
| 08/10/2004 | US6774820 Matrix improvements to lossless encoding and decoding |
| 08/05/2004 | WO2004066672A1 Apparatus and method for producing sound |
| 08/05/2004 | WO2004039127A3 Embedded data signaling |
| 08/05/2004 | US20040151476 Multichannel reproducing apparatus |
| 08/05/2004 | US20040151325 Method and apparatus to create a sound field |
| 08/05/2004 | DE10113087B4 Anordnung zur Signalverarbeitung in einem Kraftfahrzeug A signal processing arrangement in a motor vehicle |
| 08/05/2004 | CA2553744A1 Apparatus and method for producing sound |
| 08/04/2004 | EP1443804A2 A multichannel reproducing apparatus |
| 08/04/2004 | CN1518395A Electroacoustical transducing by low frequency augmenting devices |
| 08/03/2004 | US6772127 Method and apparatus for accommodating primary content audio and secondary content remaining audio capability in the digital audio production process |
| 07/29/2004 | DE4241130B4 Verfahren und Vorrichtung zur Wiedergabe von vierkanaligen Tonsignalen über einen Zweikanalkopfhörer bzw. über zwei Lautsprecher Method and apparatus for reproducing four-channel audio over a two-channel headphones or two speakers |
| 07/28/2004 | EP1234484B1 Method for deriving at least three audio signals from two input audio signals |
| 07/28/2004 | CN1516520A Xiafula audible signal processing circuit, wave filter and method |
| 07/28/2004 | CN1516348A Storage medium for coding multidigital information signal |
| 07/22/2004 | US20040141619 Method of generating a left modified and a right modified audio signal for a stereo system |
| 07/20/2004 | US6766028 Headtracked processing for headtracked playback of audio signals |
| 07/08/2004 | US20040131338 Method of reproducing audio signal, and reproducing apparatus therefor |
| 07/08/2004 | US20040131196 Sound processing |
| 07/08/2004 | US20040131192 System and method for integral transference of acoustical events |
| 07/07/2004 | CN2624342Y Effect administering equipment for controlling two dimensional sound image alignment |
| 07/06/2004 | US6760448 Compatible matrix-encoded surround-sound channels in a discrete digital sound format |
| 07/06/2004 | US6760446 Point source speaker system |
| 07/01/2004 | US20040128008 Audio processing system for used in multi-channel audio chip |
| 07/01/2004 | US20040125967 Base management systems |
| 07/01/2004 | US20040125960 Method for apparatus for audio matrix decoding |
| 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 | US6757659 Audio signal processing apparatus |
| 06/24/2004 | WO2004054321A1 Audio signal reproducing method and reproducing apparatus |
| 06/24/2004 | WO2004054320A2 Method and apparatus for accommodating primary content audio and secondary content remaining audio capability in the digital audio production process |
| 06/24/2004 | WO2004054314A1 Array speaker equipped with projection screen |
| 06/24/2004 | WO2004054313A2 Personalized surround sound headphone system |
| 06/24/2004 | US20040122663 Apparatus and method for switching audio mode automatically |
| 06/24/2004 | US20040120537 Surround device |
| 06/23/2004 | EP1430751A2 Method and apparatus for multichannel logic matrix decoding |
| 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 |
| 06/17/2004 | WO2004052052A2 Method and apparatus for processing audio signals from a bitstream |
| 06/17/2004 | WO2004051624A2 Method for describing the composition of audio signals |
| 06/17/2004 | US20040117193 Audio decoding reproduction apparatus |
| 06/17/2004 | US20040117044 Multi-channel media applications support with channel-to-connector mapping |
| 06/17/2004 | US20040114774 Sound reproduction system |
| 06/17/2004 | DE202004003000U1 Process for recording multichannel data onto compact discs uses sector of the disc to store parameter information |
| 06/17/2004 | DE10254404A1 Audiowiedergabesystem und Verfahren zum Wiedergeben eines Audiosignals The audio reproduction system and method for reproducing an audio signal |
| 06/17/2004 | CA2508220A1 Method and apparatus for processing two or more initially decoded audio signals received or replayed from a bitstream |
| 06/15/2004 | US6751322 Acoustic modeling system and method using pre-computed data structures for beam tracing and path generation |
| 06/10/2004 | US20040111171 Object-based three-dimensional audio system and method of controlling the same |
| 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 | EP1240805B1 Method and arrangement for recording and playing back sounds |
| 06/09/2004 | CN1503256A Voice encoding device and voice decoding device, optical recording medium and voice transmission method |
| 06/03/2004 | WO2004047490A1 Audio signal processing method and processing device |
| 06/03/2004 | WO2004047485A1 Audio playback system and method for playing back an audio signal |
| 06/03/2004 | WO2003103336A3 Method and system for audio imaging |
| 06/03/2004 | US20040105559 Electroacoustical transducing with low frequency augmenting devices |
| 06/03/2004 | US20040105550 Directional electroacoustical transducing |
| 06/02/2004 | CN1502215A Method of deriving a head-related transfer function |
| 06/02/2004 | CN1501388A Head retracting method/apparatus, and head actuator control circuit |
| 06/01/2004 | CA2227498C Sound processing circuit |
| 05/27/2004 | US20040102860 Device of playing songs and displaying lyrics thereof and method therefor |
| 05/26/2004 | EP1422969A2 Method and apparatus for reproducing audio signal |
| 05/26/2004 | CN1499895A Acoustic equipment |
| 05/26/2004 | CN1151705C Method and apparatus for encoding and decoding multiple audio channels at low bit rates |
| 05/25/2004 | US6741706 Audio signal processing method and apparatus |
| 05/21/2004 | WO2003092260A3 Method and apparatus for preserving matrix surround information in encoded audio/video |
| 05/20/2004 | US20040096073 Portable multi-channel amplifier |
| 05/19/2004 | DE69723412T2 Codierung einer vielzahl von datensignalen Coding a plurality of data signals |
| 05/19/2004 | CN1498035A Voice-frequency information conversion method, program and equipment |
| 05/19/2004 | CN1497591A Voice code device and decode device, optical recording medium and voice transmission method |
| 05/19/2004 | CN1497590A Voice code device and decode device, optical recording medium and voice transmission method |
| 05/19/2004 | CN1497589A Voice code device and decode device, optical recording medium and voice transmission method |