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Browse by Category: Main > Electrical & Energy
Class Information
Number: 381/307
Name: Electrical audio signal processing systems and devices > Binaural and stereophonic > Stereo speaker arrangement > Surround (i.e., front plus rear or side)
Description: Subject matter in which, in addition to having at least one transducer arranged forward of a listening position, at least one transducer is arranged laterally or to the back of the listening position.










Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8204262 Sound image localization processor, method, and program Jun. 19, 2012
8204237 Adaptive primary-ambient decomposition of audio signals Jun. 19, 2012
8199940 Audio reproduction system and speaker apparatus Jun. 12, 2012
8194863 Speaker system Jun. 5, 2012
8194898 Sound reproducing system and sound reproducing method Jun. 5, 2012
8184835 Transducer array with nonuniform asymmetric spacing and method for configuring array May. 22, 2012
8175280 Generation of spatial downmixes from parametric representations of multi channel signals May. 8, 2012
8175285 Audio player apparatus having sound analyzer and its control method May. 8, 2012
8175304 Compact loudspeaker system May. 8, 2012
8170882 Multichannel audio coding May. 1, 2012
8170245 Virtual multichannel speaker system May. 1, 2012
8165325 Automotive virtual surround audio system Apr. 24, 2012
8155370 Audio system and a method for detecting and adjusting a sound field thereof Apr. 10, 2012
8150060 Surround sound outputting device and surround sound outputting method Apr. 3, 2012
8139797 Directional electroacoustical transducing Mar. 20, 2012
8135151 Audio signal reproduction device and audio signal reproduction system Mar. 13, 2012
8130988 Method and apparatus for reproducing audio signal Mar. 6, 2012
8126173 System and method for expanding multi-speaker playback Feb. 28, 2012
8126172 Spatial processing stereo system Feb. 28, 2012
8121318 Two channel audio surround sound circuit with automatic level control Feb. 21, 2012
8121319 Tracking system using audio signals below threshold Feb. 21, 2012
8111830 Method and apparatus to provide active audio matrix decoding based on the positions of speakers and a listener Feb. 7, 2012
8098856 Wireless communications devices with three dimensional audio systems Jan. 17, 2012
8090116 Vehicle directional electroacoustical transducing Jan. 3, 2012
8086448 Dynamic modification of a high-order perceptual attribute of an audio signal Dec. 27, 2011
8073169 Controlling fading and surround signal level Dec. 6, 2011
8054998 Multichannel amplifier Nov. 8, 2011
8041060 Surround-sound system Oct. 18, 2011
8027485 Multiple channel audio system supporting data channel replacement Sep. 27, 2011
8027494 Acoustic image creation system and program therefor Sep. 27, 2011
RE42737 Voice-to-remaining audio (VRA) interactive hearing aid and auxiliary equipment Sep. 27, 2011
7978865 Audio processing apparatus Jul. 12, 2011
7974425 Sound system and method of sound reproduction Jul. 5, 2011
7957540 Automobile audio system Jun. 7, 2011
RE42390 Sound signal playback machine and method thereof May. 24, 2011
7929719 Audio signal editing apparatus and control method therefor Apr. 19, 2011
7929709 Sound image localization apparatus Apr. 19, 2011
7920707 Audio system Apr. 5, 2011
7920710 Loudspeaker apparatus Apr. 5, 2011
7920711 Audio device and method for generating surround sound having first and second surround signal generation units Apr. 5, 2011
7889878 Speaker array apparatus and method for setting audio beams of speaker array apparatus Feb. 15, 2011
7864963 Effect imparting apparatus for controlling two-dimensional sound image localization Jan. 4, 2011
7856110 Audio processor Dec. 21, 2010
7835535 Virtualizer with cross-talk cancellation and reverb Nov. 16, 2010
7804972 Method and apparatus for calibrating a sound beam-forming system Sep. 28, 2010
7801734 Systems and methods of remotely enabling sound enhancement techniques Sep. 21, 2010
7783059 Acoustic device Aug. 24, 2010
7764805 Apparatus for generating surround signal from two-channel stereo signal Jul. 27, 2010
7756275 Dynamically controlled digital audio signal processor Jul. 13, 2010
7720229 Method for measurement of head related transfer functions May. 18, 2010

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