Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Electrical & Energy
Class Information
Number: 381/28
Name: Electrical audio signal processing systems and devices > Binaural and stereophonic > Amplifier
Description: Subject matter including a device to increase the amplitude of the independent sound signals.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8706278 Non-bussed vehicle amplifier diagnostics Apr. 22, 2014
8705773 Audio amplifier Apr. 22, 2014
8705752 Low frequency noise reduction circuit architecture for communications applications Apr. 22, 2014
8686759 Bi-directional channel amplifier Apr. 1, 2014
8666014 Reproduction apparatus Mar. 4, 2014
8660277 Amplifier circuit and methods of operation thereof Feb. 25, 2014
8649532 Electronic volume circuit Feb. 11, 2014
8638170 Single supply headphone driver/charge pump combination Jan. 28, 2014
8625820 Amplifier circuit audio circuit and electronic device Jan. 7, 2014
8605915 Class G audio amplifiers and associated methods of operation Dec. 10, 2013
8600081 Audio signal amplifying circuit Dec. 3, 2013
8559644 Apparatus for sound having multiples stereo imaging Oct. 15, 2013
8553909 Low-power class D amplifier using multistate analog feedback loops Oct. 8, 2013
8526640 Apparatus and method for switching audio amplification Sep. 3, 2013
8520858 Sound system and method for capturing and reproducing sounds originating from a plurality of sound sources Aug. 27, 2013
8494183 Audio processing apparatus Jul. 23, 2013
8494171 Energy saving PWM sound device Jul. 23, 2013
8488796 3D audio renderer Jul. 16, 2013
8473291 Sound processing apparatus, apparatus and method for controlling gain, and computer program Jun. 25, 2013
8472643 Power amplifier and method for restraining power of improved power amplifier Jun. 25, 2013
8457321 Adaptive audio output Jun. 4, 2013
8452028 Dynamic surround channel volume control May. 28, 2013
8446126 Power bank apparatus with speaker May. 21, 2013
8447048 Electronic device, control volume system and method May. 21, 2013
8428949 Apparatus and method for classification and segmentation of audio content, based on the audio signal Apr. 23, 2013
8416969 Amplifier circuit Apr. 9, 2013
8416968 Audio device and audio input/output method Apr. 9, 2013
8369538 Effect adding method and effect adding apparatus Feb. 5, 2013
8355921 Method, apparatus and computer program product for providing improved audio processing Jan. 15, 2013
8335322 Mute control circuit and electronic device using same Dec. 18, 2012
8335327 Audio signal amplifier for karaoke player Dec. 18, 2012
8330538 Self-oscillating audio amplifier and method for restraining the improved self-oscillating audio amplifier Dec. 11, 2012
8295511 Audio system Oct. 23, 2012
8284962 Electronic bass instrument tube preamplifier Oct. 9, 2012
8265299 Method and an apparatus for processing an audio signal Sep. 11, 2012
8229137 Volume control circuits for use in electronic devices and related methods and electronic devices Jul. 24, 2012
8218776 Surge protection circuit for audio output device Jul. 10, 2012
8204256 System and method for muting TV speakers when headphones in use Jun. 19, 2012
8189816 Computer controlled amplifier and speaker system with power conservation feature May. 29, 2012
8184830 Audio amplifier with simplified electrical isolation May. 22, 2012
8175283 Sound analyzer based on a biomorphic design May. 8, 2012
8170217 Audio signal processing apparatus May. 1, 2012
8144880 Audio amplifier capable of performing self-oscillation Mar. 27, 2012
8130980 Automatic gain control circuit for volume control and corresponding method for volume control Mar. 6, 2012
8111844 Semiconductor integrated circuit and condenser microphone Feb. 7, 2012
8090121 Audio adapter having volume adjusting function Jan. 3, 2012
8081776 Indoor communication system for a vehicular cabin Dec. 20, 2011
8081781 A/V amplifier and method for driving the same Dec. 20, 2011
8077474 Variable equalizer apparatus Dec. 13, 2011
8050418 Update system for an audio amplifier Nov. 1, 2011

1 2 3










 
 
  Recently Added Patents
Oxidative coupling of hydrocarbons as heat source
High damage threshold frequency conversion system
Multi-chip package with a supporting member and method of manufacturing the same
Semiconductor memory system having ECC circuit and controlling method thereof
Electronic component and a system and method for producing an electronic component
Systems and methods for classifying electronic information using advanced active learning techniques
Device for preparing a body fluid for a bacteriological analysis
  Randomly Featured Patents
Product loading system
Method for manufacturing a multilayer printed wiring board
Device and method for booting handheld apparatus by sound detection
Radiation image information processing system
Cup lid
Single mode compound power-split hybrid transmission
Binary counter
Microwave steaming utensil or the like
Diaphragm spring for friction clutches or the like
System and method for optimising halftoning printer performance