| Patents for H04S 3 - Systems employing more than two channels, e.g. quadraphonic (4,597) |
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| 02/01/2006 | EP1621046A1 Loudspeaker system for virtual sound synthesis |
| 02/01/2006 | CN1728892A Sound-field correcting apparatus and method therefor |
| 02/01/2006 | CN1240044C Audio system which not only enables application of surround system standard to special playback uses but also easily maintains compatibility with surround system |
| 01/25/2006 | EP1618763A1 Audio signal synthesis |
| 01/25/2006 | EP1618762A1 A multi-channel speaker system and a connection system thereof |
| 01/24/2006 | US6990382 Control system for digital sound effect and the method of the same |
| 01/24/2006 | US6990211 Audio system and method |
| 01/24/2006 | US6990210 System for headphone-like rear channel speaker and the method of the same |
| 01/24/2006 | CA2283838C Multidirectional audio decoding |
| 01/19/2006 | US20060015926 Embedded data signaling |
| 01/19/2006 | US20060013418 5.1 channel digital surround earphone |
| 01/19/2006 | US20060013101 Audio apparatus and its reproduction program |
| 01/18/2006 | EP1617707A2 Sound reproducing apparatus and method for providing virtual sound source |
| 01/18/2006 | EP1617413A2 Multichannel audio data encoding/decoding method and apparatus |
| 01/18/2006 | CN1722630A System for wireless transmission, receiving, and amplification of voice |
| 01/18/2006 | CN1237848C Headphone-use stereophonic device and voice signal processing method |
| 01/18/2006 | CN1237845C Stereo signal processing device |
| 01/18/2006 | CN1237732C System and method for generating virtual speaker by using parametric sound system |
| 01/12/2006 | WO2006002748A1 Multi-channel synthesizer and method for generating a multi-channel output signal |
| 01/12/2006 | US20060009986 Signal processing apparatus |
| 01/12/2006 | US20060009985 Multi-channel audio system |
| 01/12/2006 | CA2569666A1 Multi-channel synthesizer and method for generating a multi-channel output signal |
| 01/11/2006 | CN1720764A Personalized surround sound headphone system |
| 01/11/2006 | CN1720760A Array speaker apparatus with projection screen |
| 01/11/2006 | CN1719949A Karaoke system with real effect |
| 01/10/2006 | US6985594 Voice-to-remaining audio (VRA) interactive hearing aid and auxiliary equipment |
| 01/05/2006 | US20060004583 Multi-channel synthesizer and method for generating a multi-channel output signal |
| 01/04/2006 | EP1613128A2 Sound image localization apparatus |
| 01/04/2006 | EP1611769A2 Outdoor loudspeaker with passive radiator |
| 01/04/2006 | CN1717955A Method for describing the composition of audio signals |
| 01/04/2006 | CN1235443C Multiple-channel audio frequency replaying apparatus and method |
| 12/29/2005 | WO2005124764A1 Multi-channel audio system |
| 12/29/2005 | US20050286713 Distributed sound enhancement |
| 12/29/2005 | DE102004025533A1 System for rendering audio-surround signals has signal source for allocation of signals, signal processing device for processing and separation of signals in main audio channel and surround channel, head phone and speaker |
| 12/28/2005 | CN1714601A Audio signal reproducing method and reproducing apparatus |
| 12/28/2005 | CN1713784A Apparatus and method of reproducing a 7.1 channel sound |
| 12/27/2005 | US6980661 Method of and apparatus for producing apparent multidimensional sound |
| 12/22/2005 | WO2005122639A1 Acoustic signal encoding device and acoustic signal decoding device |
| 12/22/2005 | US20050281409 Multi-channel audio system |
| 12/22/2005 | US20050281408 Apparatus and method of reproducing a 7.1 channel sound |
| 12/21/2005 | EP1608205A2 Multi-channel audio system |
| 12/21/2005 | EP1608204A1 Headphones with a multichannel guiding mechanism |
| 12/21/2005 | EP1606975A2 Device and method for calculating a discrete value of a component in a loudspeaker signal |
| 12/21/2005 | EP1606797A1 Processing of multi-channel signals |
| 12/21/2005 | CN1711800A Method and apparatus for processing two or more initially decoded audio signals |
| 12/21/2005 | CN1710995A Multi-channel audio system |
| 12/15/2005 | WO2005120133A1 Apparatus and method of reproducing wide stereo sound |
| 12/15/2005 | WO2005120132A1 Acoustical signal processing apparatus |
| 12/15/2005 | US20050276430 Fast headphone virtualization |
| 12/15/2005 | US20050276420 Audio channel spatial translation |
| 12/14/2005 | EP0919109B1 Recording and play-back two-channel system for providing a holophonic reproduction of sounds |
| 12/14/2005 | CN1707956A Audio signal encoding and decoding apparatus |
| 12/14/2005 | CN1232156C Method and arrangement for recording and playing back sounds |
| 12/08/2005 | US20050273322 Audio signal encoding and decoding apparatus |
| 12/08/2005 | US20050271230 Array speaker apparatus with projection screen |
| 12/08/2005 | US20050271223 Audio signal reproducing method and reproducing apparatus |
| 12/08/2005 | US20050271218 Palm type dolby decoding earphone device |
| 12/08/2005 | US20050271213 Apparatus and method of reproducing wide stereo sound |
| 12/07/2005 | EP1603119A2 Efficient and scalable parametric stereo coding for low bitrate audio coding applications |
| 12/07/2005 | EP1603118A2 Efficient and scalable parametric stereo coding for low bitrate audio coding applications |
| 12/07/2005 | EP1603117A2 Efficient and scalable parametric stereo coding for low bitrate audio coding applications |
| 12/07/2005 | CN1706222A Embedded data signaling |
| 12/07/2005 | CN1706221A Method for simulating a movement by means of an acoustic reproduction device, and sound reproduction arrangement therefor |
| 12/01/2005 | WO2005083684B1 Decoding scheme for variable block length signals |
| 12/01/2005 | US20050265564 Adapter connectable between audio amplifier and transmitter for cordless speaker |
| 12/01/2005 | US20050265559 Sound-field correcting apparatus and method therefor |
| 11/30/2005 | EP1601233A2 Sound-field correcting apparatus and method therefor |
| 11/30/2005 | EP1600945A2 Efficient and scalable parametric stereo coding for low bitrate audio coding applications |
| 11/30/2005 | EP1600042A1 Method for the treatment of compressed sound data for spatialization |
| 11/30/2005 | EP0966865B1 Multidirectional audio decoding |
| 11/29/2005 | US6970567 Method and apparatus for deriving at least one audio signal from two or more input audio signals |
| 11/24/2005 | US20050259827 System and method for 3D sound processing |
| 11/23/2005 | CN1701635A Bass management systems |
| 11/17/2005 | WO2005109953A1 Systems and methods of remotely enabling sound enhancement techniques |
| 11/17/2005 | US20050254659 Stereo signal processing apparatus |
| 11/17/2005 | US20050254446 Signal synthesizing |
| 11/17/2005 | US20050254281 Information recording medium, information recording device and method, information reproduction device and method, information recording/reproduction device and method, computer program, and data structure |
| 11/16/2005 | EP1596627A2 Reproducing center channel information in a vehicle multichannel audio system |
| 11/16/2005 | EP1596389A2 System and method for high-quality variable speed playback |
| 11/16/2005 | CN1227951C Audio enhancement system for use in surround sound environment |
| 11/16/2005 | CN1227643C Effect administering equipment for controlling two-dimension voice image positioning |
| 11/10/2005 | WO2005107061A1 Audio amplifier and speaker incorporating audio amplifier |
| 11/10/2005 | WO2005106843A1 Reproduction control of an audio signal based on musical genre classification |
| 11/10/2005 | US20050249367 Encoding spatial data in a multi-channel sound file for an object in a virtual environment |
| 11/10/2005 | US20050249365 Arithmetic operation method and apparatus for mixing audio signals |
| 11/10/2005 | US20050249356 Reproducing center channel information in a vehicle multichannel audio system |
| 11/10/2005 | US20050248476 Digital audio signal filtering mechanism and method |
| 11/10/2005 | US20050248475 Previewing digital audio clips |
| 11/10/2005 | US20050248474 GUI for digital audio signal filtering mechanism |
| 11/09/2005 | CN1694580A Measuring apparatus and method, and recording medium |
| 11/09/2005 | CN1226901C Method for deriving at least three audio signals from two input audio signals |
| 11/03/2005 | US20050246179 Systems and methods of remotely enabling sound enhancement techniques |
| 11/03/2005 | US20050244012 Measuring apparatus and method, and recording medium |
| 11/03/2005 | US20050244010 Stereophonic sound reproducing system and stereophonic sound reproducing apparatus |
| 11/02/2005 | EP1592283A2 Measuring apparatus and method, and recording medium |
| 11/02/2005 | CN1691841A 5-2-5 matrix encoder and decoder system |
| 11/02/2005 | CN1691765A Information processing apparatus, imaging apparatus, information processing method, and program |
| 11/01/2005 | US6961632 Signal processing apparatus |
| 10/27/2005 | WO2005101905A1 Scheme for generating a parametric representation for low-bit rate applications |
| 10/27/2005 | US20050240395 Digital audio signal filtering mechanism and method |