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Browse by Category: Main > Electrical & Energy
Class Information
Number: 381/10
Name: Electrical audio signal processing systems and devices > Binaural and stereophonic > Broadcast or multiplex stereo > Fm final modulation > Am subcarrier > Channel separation control
Description: Subject matter where there is control over the electrical or acoustical difference between the independent sound signals.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8694306 Systems and methods for source signal separation Apr. 8, 2014
8625811 Method and apparatus for encoding and decoding stereo signal and multi-channel signal Jan. 7, 2014
8537913 Apparatus and method for encoding/decoding a multichannel signal Sep. 17, 2013
8473291 Sound processing apparatus, apparatus and method for controlling gain, and computer program Jun. 25, 2013
8428267 Method and an apparatus for decoding an audio signal Apr. 23, 2013
8391498 Stereophonic widening Mar. 5, 2013
8369532 Device for and a method of processing an audio signal Feb. 5, 2013
8295495 System and method for detecting rated maximum system deviation (RMSD) and alleviating RMSD mismatch Oct. 23, 2012
8194861 Scheme for generating a parametric representation for low-bit rate applications Jun. 5, 2012
8170884 Use of voice-to-remaining audio (VRA) in consumer applications May. 1, 2012
8155362 Wireless listening system Apr. 10, 2012
8126173 System and method for expanding multi-speaker playback Feb. 28, 2012
8116459 Enhanced method for signal shaping in multi-channel audio reconstruction Feb. 14, 2012
8111829 Method and apparatus for encoding and decoding stereo signal and multi-channel signal Feb. 7, 2012
8112272 Sound source separation device, speech recognition device, mobile telephone, sound source separation method, and program Feb. 7, 2012
8108220 Techniques for accommodating primary content (pure voice) audio and secondary content remaining audio capability in the digital audio production process Jan. 31, 2012
8103005 Primary-ambient decomposition of stereo audio signals using a complex similarity index Jan. 24, 2012
8093841 System and method for faster response time in stereo/mono detection Jan. 10, 2012
8023659 Mixing system, method and program Sep. 20, 2011
7889871 Apparatus for multichannel sound reproduction system Feb. 15, 2011
RE42093 Active audio compressing in telecommunication Feb. 1, 2011
7664271 Method and apparatus for processing sound signal Feb. 16, 2010
7486796 Stereo receiver for controlling continuously degree of separation Feb. 3, 2009
7457420 Method and system for detecting signal modes in a broadcast audio transmission Nov. 25, 2008
7337111 Use of voice-to-remaining audio (VRA) in consumer applications Feb. 26, 2008
7266501 Method and apparatus for accommodating primary content audio and secondary content remaining audio capability in the digital audio production process Sep. 4, 2007
7260225 Method and device for processing a stereo audio signal Aug. 21, 2007
7243073 Method for realizing virtual multi-channel output by spectrum analysis Jul. 10, 2007
7110549 Noise reduction in a stereo receiver Sep. 19, 2006
7065218 Method of generating a left modified and a right modified audio signal for a stereo system Jun. 20, 2006
7065217 Apparatus and method for multichannel sound reproduction system Jun. 20, 2006
6912501 Use of voice-to-remaining audio (VRA) in consumer applications Jun. 28, 2005
6859238 Scaling adjustment to enhance stereo separation Feb. 22, 2005
6772127 Method and apparatus for accommodating primary content audio and secondary content remaining audio capability in the digital audio production process Aug. 3, 2004
6658116 Stereo radio receiver Dec. 2, 2003
6535608 Stereo broadcasting receiving device Mar. 18, 2003
6522750 Method and corresponding system for influencing the stereo channel separation of an audiosignal Feb. 18, 2003
6311155 Use of voice-to-remaining audio (VRA) in consumer applications Oct. 30, 2001
6295362 Direct digital synthesis of FM signals Sep. 25, 2001
6173022 Synchronizing audio signal samples taken at different sampling rates Jan. 9, 2001
6002774 Arrangement, a system, a circuit and a method for enhancing a stereo image Dec. 14, 1999
5784465 Stereo receiver Jul. 21, 1998
5771293 Switching arrangement for mobile radio receivers Jun. 23, 1998
5740523 Radio receiver Apr. 14, 1998
5703954 Method and apparatus for improving the quality of AM compatible digital broadcast system signals in the presence of distortion Dec. 30, 1997
5701345 Multipath interference reduction system and method Dec. 23, 1997
5671286 Strategy for controlling FM stereo separation and frequency response in noisy reception environments Sep. 23, 1997
5661809 Radio receiver having digital signal processing Aug. 26, 1997
5661810 Circuit arrangement for deriving signals for masking audio signals Aug. 26, 1997
5592557 Radio receiver with digital signal processing Jan. 7, 1997

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