H04S 1 - Two-channel systems

Patents for H04S 1 - Two-channel systems (4,182)
12/2004
12/01/2004	CN1178552C Acoustic-field correction circuit and its method
11/2004
11/30/2004	US6826282 Music spatialisation system and method
11/25/2004	WO2004103023A1 Method for preparing transfer function table for localizing virtual sound image, recording medium on which the table is recorded, and acoustic signal editing method using the medium
11/25/2004	WO2003104924A3 Acoustical virtual reality engine and advanced techniques for enhancing delivered sound
11/25/2004	US20040234077 Audio sound quality enhancement apparatus
11/25/2004	US20040234076 Device and method for simulation of the presence of one or more sound sources in virtual positions in three-dimensional acoustic space
11/24/2004	EP1416767B1 Device for monitoring and amplifying audio signals
11/24/2004	CN1177456C Record regeneration device
11/18/2004	US20040230537 Vicarious execution support system, vicarious execution support method and program for vicarious execution support
11/18/2004	US20040228367 Synchronous play-out of media data packets
11/18/2004	DE10318683A1 Sound and/or image reproduction device e.g. for in-car entertainment system, using frequency separation box for freqecy separation in stereo channels
11/11/2004	WO2004098105A1 Support of a multichannel audio extension
11/11/2004	US20040225388 Fully digitized audio system
11/10/2004	EP1475992A2 Electroacoustical transducing
11/10/2004	EP1127476A4 Point source speaker system
11/10/2004	CN2655581Y Digital music player
11/04/2004	WO2004095880A2 Sound and/or image reproduction unit, and use of a removable operator panel
11/04/2004	US20040218765 System and method for adjusting frequency response characteristics of a speaker based upon placement near a wall or other acoustically-reflective surface
11/04/2004	US20040218764 Point source speaker system
11/03/2004	EP1472905A2 Multichannel echo canceller system using active audio matrix coefficients
11/03/2004	EP1472786A2 A method for decreasing the dynamic range of a signal and electronic circuit
11/03/2004	CN1543753A Sound image localizer
11/03/2004	CN1543262A Automobile audio request equipment and working method thereof
11/03/2004	CN1174658C Fully digitalized sound system
10/2004
10/28/2004	WO2004093494A1 Audio signal generation
10/28/2004	WO2004093488A2 Directional speakers
10/28/2004	US20040213423 Audio signal processing apparatus
10/28/2004	US20040213412 Stereo sounding method, stereo sounding system, and musical tone generation control system
10/27/2004	EP1471770A2 Method for generating an approximated partial transfer function
10/27/2004	EP1470437A2 Acoustic logging tool having programmable source waveforms
10/27/2004	CN1541500A System for generating sounds
10/21/2004	WO2004091257A1 System comprising sound reproduction means and ear microphones
10/21/2004	US20040209654 Directional speaker for portable electronic device
10/21/2004	US20040208333 Directional hearing enhancement systems
10/21/2004	US20040208325 Method and apparatus for wireless audio delivery
10/21/2004	US20040208324 Method and apparatus for localized delivery of audio sound for enhanced privacy
10/20/2004	CN2650440Y Connecting device for loudspeaker box
10/19/2004	US6807281 Loudspeaker and method of driving the same as well as audio signal transmitting/receiving apparatus
10/14/2004	WO2004075162A3 Method apparatus and system for processing acoustic signals
10/13/2004	CN1536933A Direct flow digital technique and data flow treatment system
10/12/2004	US6804358 Sound image localizing processor
10/07/2004	WO2004086818A1 Method for treating an electric sound signal
10/07/2004	WO2004086817A2 Coding of main and side signal representing a multichannel signal
10/07/2004	US20040199390 Signal processing system for reducing power consumption
10/07/2004	US20040196991 Sound image localizer
10/07/2004	US20040196982 Directional electroacoustical transducing
10/06/2004	CN1535074A 2.1 sound channel audio frequency signal switching circuit
10/05/2004	US6801628 System and method for adjusting frequency response characteristics of a speaker based upon placement near a wall or other acoustically-reflective surface
10/05/2004	US6801627 Method for localization of an acoustic image out of man's head in hearing a reproduced sound via a headphone
09/2004
09/30/2004	WO2004084185A1 Processing of multi-channel signals
09/30/2004	US20040190735 Acoustic interactive counter display
09/29/2004	CN1533216A Earphone with reinforced structure
09/23/2004	US20040184624 Audio mixing circuit
09/22/2004	EP1459596A2 Circuit and method for enhancing a stereo signal
09/22/2004	CN2643592Y Multimedia car audio
09/22/2004	CN1531372A Wireless acoustic system for providing phonetic and data multiple converting transmission
09/21/2004	US6795556 Method of modifying one or more original head related transfer functions
09/16/2004	WO2004080125A1 Support of a multichannel audio extension
09/16/2004	US20040181395 Scalable stereo audio coding/decoding method and apparatus
09/15/2004	EP1380189B1 Sound processing
09/15/2004	EP1177707B1 Centralizing of a spatially expanded stereophonic audio image
09/14/2004	US6792119 Audio system
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	WO2004075162A2 Method apparatus and system for processing acoustic signals
09/02/2004	WO2004047488A3 Receiver
09/02/2004	WO2004021686A3 Telecommunication terminal comprising a memory for storing acoustic effect data
09/02/2004	US20040170281 Sound recording and reproduction systems
09/01/2004	EP1452069A2 Time scaling of stereo audio
09/01/2004	EP0776593B1 Method and apparatus for spatially enhancing stereo and monophonic signals
09/01/2004	CN1526256A Multiple signal carrier transmission apparatus and method
08/2004
08/26/2004	WO2004072956A1 Audio coding
08/25/2004	EP1110427B1 Low-frequency audio enhancement system
08/25/2004	CN1524400A Efficient and scalable parametric stereo coding for low bitrate applications
08/25/2004	CN1523930A Test method and apparatus for implementing voice quality objective evaluation
08/19/2004	US20040161117 Method for at least two audio signals
08/18/2004	CN2634772Y Electric turning speaker
08/12/2004	WO2004052052A3 Method and apparatus for processing audio signals from a bitstream
08/11/2004	EP0823189B1 Stereo enhancement system
08/11/2004	EP0760197A4 Three-dimensional virtual audio display employing reduced complexity imaging filters
08/11/2004	CN2632974Y Electronic frequency dividing household cinema devices
08/05/2004	WO2004066672A1 Apparatus and method for producing sound
08/05/2004	WO2004039127A3 Embedded data signaling
08/05/2004	WO2004027642A3 Method and system for processing a sound field representation
08/05/2004	US20040151325 Method and apparatus to create a sound field
08/05/2004	CA2553744A1 Apparatus and method for producing sound
08/04/2004	EP0958710B1 Audio system comprising audio signal processing circuit
08/04/2004	CN2631173Y Multi channel circulating sound box
08/04/2004	CN2631172Y Plastic-formed horn wire
08/04/2004	CN1518397A Voice-frequency device
08/04/2004	CN1518395A Electroacoustical transducing by low frequency augmenting devices
08/03/2004	US6771778 Method and signal processing device for converting stereo signals for headphone listening
08/03/2004	US6771777 Process for coding and decoding stereophonic spectral values
07/2004
07/29/2004	WO2004064451A1 Audio signal processing
07/29/2004	US20040148177 Method and apparatus of audio performance
07/29/2004	US20040146168 Adaptive sound scrambling system and method
07/29/2004	US20040146166 Method and circuit for headset listening of an audio recording
07/29/2004	US20040146165 Digital music broadcasting audio system
07/29/2004	US20040146034 Audio and data multiplexed wireless audio system
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

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