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Browse by Category: Main > Electrical & Energy
Class Information
Number: 381/123
Name: Electrical audio signal processing systems and devices > Switching
Description: Subject matter where there is the making, breaking or changing connections in an electrical circuit.










Patents under this class:
1 2 3 4 5 6 7 8

Patent Number Title Of Patent Date Issued
8705763 In-vehicle audio device and in-vehicle audio system Apr. 22, 2014
8705773 Audio amplifier Apr. 22, 2014
8675886 Method and apparatus for providing a splitter in a notification system Mar. 18, 2014
8675889 Two wire autobias vehicular microphone system having user input functionality and method of forming same Mar. 18, 2014
8675891 Power supply unit with noise reduction capability Mar. 18, 2014
8654995 Audio control system for a vehicle Feb. 18, 2014
8625818 No pop switch Jan. 7, 2014
8611562 Sound mixing console Dec. 17, 2013
8611549 Detection circuit for audio device Dec. 17, 2013
8605918 Power saving system and method for loudspeaker Dec. 10, 2013
8600084 Methods and systems for altering the speaker orientation of a portable system Dec. 3, 2013
8594344 Method and apparatus for layered audio Nov. 26, 2013
8594341 System and method for selectively switching between a plurality of audio channels Nov. 26, 2013
8588434 Controlling microphones and speakers of a computing device Nov. 19, 2013
8577057 Digital dual microphone module with intelligent cross fading Nov. 5, 2013
8577052 Headphone accessory Nov. 5, 2013
8571226 Automatic polarity adaptation for ambient noise cancellation Oct. 29, 2013
8571236 Volume control system, controller, and amplifying apparatus Oct. 29, 2013
8565451 Audio signal output device Oct. 22, 2013
8559650 Circuit apparatus and method for detecting earphone in portable terminal Oct. 15, 2013
8559658 Electronic apparatus Oct. 15, 2013
8542847 Controlled overlap driver circuit Sep. 24, 2013
8532315 High powered high speed switch Sep. 10, 2013
8527021 Entertainment system including selectable IR receive and transmit codes and day/night picture modes Sep. 3, 2013
8515092 Interactive toy for audio output Aug. 20, 2013
8503698 Mixing apparatus Aug. 6, 2013
8494183 Audio processing apparatus Jul. 23, 2013
8488813 Reconfigurable acoustic transducer device Jul. 16, 2013
8488801 Audio compensation unit and compensating method and audio processing device thereof Jul. 16, 2013
8483853 Controlling and manipulating groupings in a multi-zone media system Jul. 9, 2013
8472633 Detection of device configuration Jun. 25, 2013
8472641 Ambient noise cancellation for voice communications device Jun. 25, 2013
8472659 Multimode audio reproduction device Jun. 25, 2013
8467542 Sound recording device, sound recording method, and sound recording program embodied on computer readable medium Jun. 18, 2013
8462967 System, method and apparatus for television speaker configuration Jun. 11, 2013
8452030 External equipment controlling apparatus May. 28, 2013
8452025 Power supply circuit including voltage regulator and headphone driving circuit employing the same May. 28, 2013
8451388 Audio processing apparatus and audio processing method for processing according to detected mode May. 28, 2013
8447046 Circuit with three-stage of power-on sequence used for suppressing the pop noise in audio system May. 21, 2013
8437484 Switching circuit and electronic device using the same May. 7, 2013
8416956 Protected digital audio driver Apr. 9, 2013
8416968 Audio device and audio input/output method Apr. 9, 2013
8411870 Electronic apparatus Apr. 2, 2013
8401681 System and method for placeshifting media playback Mar. 19, 2013
8379877 Sound collector and sound recorder Feb. 19, 2013
8379883 Audio mixer and parameter setting method therefor Feb. 19, 2013
8379884 Sound signal transmitter-receiver Feb. 19, 2013
8374359 Kick gate Feb. 12, 2013
8369534 Mode switching noise cancellation for microphone-speaker combinations used in two way audio communications Feb. 5, 2013
8363857 Portable electronic device Jan. 29, 2013

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