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Class Information
Number: 381/80
Name: Electrical audio signal processing systems and devices > One-way audio signal program distribution > Multiple channel
Description: Subject matter having more than one audio signal path.

Sub-classes under this class:

Class Number Class Name Patents
381/81 With switching 174

Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8711219 Signal processor and signal processing method Apr. 29, 2014
8712072 Multi-wired antenna for mobile apparatus Apr. 29, 2014
8705750 Device and method for converting spatial audio signal Apr. 22, 2014
8705780 Audio apparatus, audio signal transmission method, and audio system Apr. 22, 2014
8675649 Audio network system and method of detecting topology in audio signal transmitting system Mar. 18, 2014
8660055 Pseudo hub-and-spoke wireless audio network Feb. 25, 2014
8638958 Speaker shoes with audio adapter receiver Jan. 28, 2014
8634572 Method and apparatus for ambient sound therapy user interface and control system Jan. 21, 2014
8620010 Loudspeaker device Dec. 31, 2013
8600077 Audio level control Dec. 3, 2013
8594340 Transmitter Nov. 26, 2013
8577045 Apparatus and method for encoding a multi-channel audio signal Nov. 5, 2013
8571229 Semiconductor device Oct. 29, 2013
8559661 Sound system and method of operation therefor Oct. 15, 2013
8532309 Signal correction apparatus and signal correction method Sep. 10, 2013
8515566 Sequence grabber for audio content Aug. 20, 2013
8502821 System for three-dimensional rendering of electrical test and measurement signals Aug. 6, 2013
8488800 Segmenting audio signals into auditory events Jul. 16, 2013
8457334 Audio apparatus, audio signal transmission method, and audio system Jun. 4, 2013
8452027 Audio conference system May. 28, 2013
8452030 External equipment controlling apparatus May. 28, 2013
8452433 Path setting method and apparatus for audio system, and audio system May. 28, 2013
8428273 Wireless digital transmission system for loudspeakers Apr. 23, 2013
8422692 Audio distribution system Apr. 16, 2013
8363855 Multichannel downmixing device Jan. 29, 2013
8340330 Audio apparatus for wirelessly transmitting audio signal, audio system, and audio signal transmission method thereof Dec. 25, 2012
8333609 Connector, multi-channel audio system, electronic apparatus, and cable for connection Dec. 18, 2012
8335320 Audio apparatus Dec. 18, 2012
8325941 Method and apparatus to shape sound Dec. 4, 2012
8320580 System and method for directional sound transmission with a linear array of exponentially spaced loudspeakers Nov. 27, 2012
8321041 Playlist-based content assembly Nov. 27, 2012
8295500 Method and apparatus for controlling directional sound sources based on listening area Oct. 23, 2012
8290603 User interfaces for controlling and manipulating groupings in a multi-zone media system Oct. 16, 2012
8290174 Apparatus and method for authorizing reproduction and controlling of program transmissions at locations distant from the program source Oct. 16, 2012
8284946 Binaural decoder to output spatial stereo sound and a decoding method thereof Oct. 9, 2012
8280070 Arrangement and method for communicating audio and DC signals Oct. 2, 2012
8275143 Audio system Sep. 25, 2012
8275160 Delay time calculation apparatus, delay time calculation method, and storage medium storing program therefor Sep. 25, 2012
8249269 Sound collecting device, sound collecting method, and collecting program, and integrated circuit Aug. 21, 2012
8244308 Helmet communication device Aug. 14, 2012
8243948 Selector and amplifier device therefor Aug. 14, 2012
8243949 Network addressible loudspeaker and audio play Aug. 14, 2012
8233635 Audio signal transmitting apparatus, audio signal receiving apparatus, audio signal transmission system, audio signal transmission method, and program Jul. 31, 2012
8218789 Phase equalization for multi-channel loudspeaker-room responses Jul. 10, 2012
8213630 Sound processing unit, sound processing system, audio output unit and display device Jul. 3, 2012
8208653 Method and apparatus for reproducing multi-channel sound using cable/wireless device Jun. 26, 2012
8208642 Method and apparatus for a binaural hearing assistance system using monaural audio signals Jun. 26, 2012
8199925 Loudspeaker array audio signal supply apparatus Jun. 12, 2012
8194863 Speaker system Jun. 5, 2012
8194878 Dual streaming with exchange of FEC streams by audio sinks Jun. 5, 2012

1 2 3 4

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