Patents
Sitemap › H04 - Electric communication technique › H04S - Stereophonic systems › H04S 1 - Two-channel systems
Patents for H04S 1 - Two-channel systems (4,182)
05/2003
05/15/2003WO2003041448A1 Flat loudspeaker unit
05/15/2003WO2002062103A3 Audio sound quality enhancement apparatus
05/15/2003US20030091194 Method and device for processing a stereo audio signal
05/14/2003EP1310139A2 Stereo audio processing device
05/14/2003CN2550987Y 耳机 Headphone
05/13/2003US6563869 Digital signal processing circuit and audio reproducing device using it
05/08/2003WO2002001916A3 Sound reproduction systems
05/08/2003US20030085993 Tuneable secondary audio program receiver
05/06/2003US6560497 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
05/01/2003CA2410268A1 Tuneable secondary audio program receiver
04/2003
04/30/2003CN2548384Y Multimedia acoustics with earphone
04/30/2003CN2548383Y 多功用麦克风装置 Multi-function microphone device
04/29/2003US6556682 Method for cancelling multi-channel acoustic echo and multi-channel acoustic echo canceller
04/24/2003WO2003034781A2 Bass frequency amplifying apparatus
04/24/2003WO2002085068A3 Sound processing
04/24/2003US20030076973 Sound signal processing method and sound reproduction apparatus
04/24/2003US20030076972 Sound field correction circuit
04/23/2003EP1304018A2 Method for the transmission of audio signals
04/23/2003CN1106209C Electronic gaming device capable of generating pseudo-stereophonic sound
04/22/2003US6553121 Three-dimensional acoustic processor which uses linear predictive coefficients
04/17/2003WO2003032685A1 Hyperbolic paraboloid audio system
04/17/2003WO2003032296A1 Encoding apparatus and method, decoding apparatus and method, and recording medium recording apparatus and method
04/10/2003WO2003030589A2 Sound reproduction systems
04/10/2003WO2003030588A2 Method and device for selecting a sound algorithm
04/10/2003WO2002073435A9 Sound direction system
04/09/2003CN1409940A Multichannel audio signal processing device
04/09/2003CN1409577A Actor's line scomponent emphasizer
04/03/2003US20030065513 Voice input and output apparatus
04/02/2003EP1298960A2 Digital acoustic reproducing apparatus, acoustic apparatus and accoustic reproducing system
04/02/2003CN2543314Y Improvement of earphone structure
03/2003
03/27/2003US20030059070 Method and apparatus for producing spatialized audio signals
03/26/2003EP1295511A2 Multi-channel stereo converter for deriving a stereo surround and/or audio centre signal
03/26/2003CN1104137C Image/audio reproducing system
03/25/2003US6539357 Technique for parametric coding of a signal containing information
03/25/2003CA2272600C System and method for scheduling and processing image and sound data
03/20/2003WO2003023970A2 Serial data interface with reduced power consumption
03/20/2003WO2002025999A3 A method of audio signal processing for a loudspeaker located close to an ear
03/20/2003US20030055636 System and method for enhancing speech components of an audio signal
03/20/2003US20030055517 Digital acoustic reproducing apparatus, acoustic apparatus and acoustic reproducing system
03/18/2003US6535611 Method and apparatus for reducing switching noise of a digital volume control
03/18/2003US6535608 Stereo broadcasting receiving device
03/13/2003WO2003022003A2 Audio reproducing device
03/12/2003EP1290675A1 Method of processing a signal
03/12/2003CN1402956A Acoustic correction apparatus
03/12/2003CN1402593A 5.1 path surround sound earphone repeat signal processing method
03/12/2003CN1402592A Two-loudspeaker virtual 5.1 path surround sound signal processing method
03/11/2003US6532296 Active noise reduction audiometric headphones
03/11/2003US6532291 Head tracking with limited angle output
03/06/2003US20030044032 Audio reproducing device
03/05/2003CN2539374Y Compound coaxial magnetic return horn structure
03/05/2003CN2539373Y Ceramic loudspeaker box
03/05/2003CN1401203A Audio system
03/04/2003US6529787 Multimedia computer speaker system with bridge-coupled subwoofer
02/2003
02/27/2003WO2002009474A3 Stereo audio processing device
02/27/2003US20030039372 Display control apparatus for displaying gain setting value in predetermined color hue
02/27/2003US20030039365 Sound processing system with degraded signal optimization
02/26/2003EP1285819A2 Removable front panel for an entertainment device
02/20/2003WO2003015471A2 Device and method for simulation of the presence of one or more sound sources in virtual positions in three-dimensional acoustic space
02/20/2003WO2003015466A1 Improvements in relation to sound reproduction
02/20/2003WO2003015082A1 Sound intelligibilty enchancement using a psychoacoustic model and an oversampled fiolterbank
02/20/2003US20030035553 Backwards-compatible perceptual coding of spatial cues
02/20/2003CA2457490A1 Device and method for simulation of the presence of one or more sound sources in virtual positions in three-dimensional acoustic space
02/19/2003EP1284060A2 Method and means for receiving a digital transmission comprising a plurality of digital audio signals and for simultaneous reproduction of these digital signals as analog audio programmes
02/18/2003US6523006 Three dimensional audio vision
02/18/2003US6522751 Stereophonic signal processing apparatus
02/18/2003US6522750 Method and corresponding system for influencing the stereo channel separation of an audiosignal
02/13/2003WO2003013189A1 Acoustic reproduction apparatus
02/13/2003WO2003012579A2 Automotive storage and playback device and method using the same
02/13/2003US20030031334 Sonic landscape system
02/13/2003US20030031333 System and method for optimization of three-dimensional audio
02/13/2003US20030031332 Audio reproducing system
02/13/2003US20030031323 Multiple signal carrier transmission apparatus and method
02/12/2003EP1283658A2 Multi channel audio reproduction system
02/11/2003US6519342 Method and apparatus for filtering an audio signal
02/07/2003CA2354755A1 Sound intelligibilty enhancement using a psychoacoustic model and an oversampled filterbank
02/05/2003CN2534760Y Loudspeaker box
02/05/2003CN2534759Y Improvement of voice box structure
01/2003
01/30/2003WO2003009643A1 Sound image localizer
01/30/2003WO2003009642A2 Method for at least two audio signals
01/30/2003US20030023649 Digital filtering method and device and sound image localizing device
01/30/2003US20030023331 Portable terminal unit and sound reproducing system using at least one portable terminal unit
01/30/2003US20030021423 System for transitioning from stereo to simulated surround sound
01/29/2003EP1280377A1 Speaker configuration and signal processor for stereo sound reproduction for vehicle and vehicle having the same
01/29/2003EP1279318A2 Audio system
01/29/2003EP1279317A1 Membrane with embossed surface
01/29/2003EP0879502B1 A method for implementing a sound reproduction system for a large space, and a sound reproduction system
01/23/2003WO2003007656A1 Efficient and scalable parametric stereo coding for low bitrate applications
01/23/2003WO2003007652A1 Multiple signal carrier transmission apparatus and method
01/23/2003US20030018477 Audio User Interface
01/23/2003US20030016837 Stereo sound circuit device for providing three-dimensional surrounding effect
01/22/2003EP1278398A2 Distributed audio network using networked computing devices
01/22/2003EP1277373A2 Automatic mono/stereo detection
01/22/2003CN1392750A Acoustic system with radio loudspeaker
01/16/2003WO2001097565A3 Method and device for enhancing the playback of audio or visual information
01/16/2003US20030014486 Distributed audio network using networked computing devices
01/16/2003US20030014243 System and method for virtual localization of audio signals
01/15/2003EP1275271A2 Multi-channel audio converter
01/15/2003EP1275270A1 Creating virtual surround using dipole and monopole pressure fields
01/15/2003CN1391781A Two methods and two devices for processing input audio stereo signal, and audio stereo signal reproduction system
01/14/2003US6507657 Stereophonic sound image enhancement apparatus and stereophonic sound image enhancement method
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