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Class Information
Number: 381/94.3
Name: Electrical audio signal processing systems and devices > Noise or distortion suppression > Spectral adjustment > In multiple frequency bands
Description: Subject matter in which processing takes place in more than one spectral region, i.e., more than one frequency or frequency band is processed.

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

Patent Number Title Of Patent Date Issued
8712075 Spatially pre-processed target-to-jammer ratio weighted filter and method thereof Apr. 29, 2014
8712076 Post-processing including median filtering of noise suppression gains Apr. 29, 2014
8712074 Noise spectrum tracking in noisy acoustical signals Apr. 29, 2014
8693703 Method of combining at least two audio signals and a microphone system comprising at least two microphones Apr. 8, 2014
8693705 Response waveform synthesis method and apparatus Apr. 8, 2014
8687818 Method for dynamically adjusting the spectral content of an audio signal Apr. 1, 2014
8676128 Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in a wireless communication system Mar. 18, 2014
8666736 Noise-reduction processing of speech signals Mar. 4, 2014
8666527 System for elimination of acoustic feedback Mar. 4, 2014
8666092 Noise estimation Mar. 4, 2014
8654990 Multiple microphone based directional sound filter Feb. 18, 2014
8654992 Sound processing apparatus, method for correcting phase difference, and computer readable storage medium Feb. 18, 2014
8645142 System and method for method for improving speech intelligibility of voice calls using common speech codecs Feb. 4, 2014
8634578 Multiband dynamics compressor with spectral balance compensation Jan. 21, 2014
8634575 System for elimination of acoustic feedback Jan. 21, 2014
8615092 Sound processing device, correcting device, correcting method and recording medium Dec. 24, 2013
8611556 Calibrating multiple microphones Dec. 17, 2013
8605909 Method and device for efficient binaural sound spatialization in the transformed domain Dec. 10, 2013
8606571 Spatial selectivity noise reduction tradeoff for multi-microphone systems Dec. 10, 2013
8606573 Voice recognition improved accuracy in mobile environments Dec. 10, 2013
8600073 Wind noise suppression Dec. 3, 2013
8588430 Controlling an adaptation of a behavior of an audio device to a current acoustic environmental condition Nov. 19, 2013
8583439 Enhanced interface for use with speech recognition Nov. 12, 2013
8577054 Signal processing apparatus, signal processing method, and program Nov. 5, 2013
8577675 Method and device for speech enhancement in the presence of background noise Nov. 5, 2013
8571243 Method for suppressing feedback and for spectral extension in hearing devices Oct. 29, 2013
8571231 Suppressing noise in an audio signal Oct. 29, 2013
8565459 Signal processing using spatial filter Oct. 22, 2013
8559652 Apparatus and method for removing white noise in portable terminal Oct. 15, 2013
8553799 Method and apparatus for obtaining precoding matrix indicator Oct. 8, 2013
8554145 Server for allocating a frequency for wireless audio communications Oct. 8, 2013
8538037 Audio signal decorrelator, multi channel audio signal processor, audio signal processor, method for deriving an output audio signal from an input audio signal and computer program Sep. 17, 2013
8538035 Multi-microphone robust noise suppression Sep. 17, 2013
8515085 Signal processing apparatus Aug. 20, 2013
8509450 Dynamic audibility enhancement Aug. 13, 2013
8509451 Noise suppressing device, noise suppressing controller, noise suppressing method and recording medium Aug. 13, 2013
8509456 Level adjusting circuit Aug. 13, 2013
8489884 Methods and apparatus for generating signatures Jul. 16, 2013
8488806 Signal processing apparatus Jul. 16, 2013
8488800 Segmenting audio signals into auditory events Jul. 16, 2013
8483406 System for detecting and reducing noise via a microphone array Jul. 9, 2013
8467538 Dereverberation apparatus, dereverberation method, dereverberation program, and recording medium Jun. 18, 2013
8467543 Microphone and voice activity detection (VAD) configurations for use with communication systems Jun. 18, 2013
8467545 Noise reduction systems and methods for voice applications Jun. 18, 2013
8462962 Sound processor, sound processing method and recording medium storing sound processing program Jun. 11, 2013
8438022 System that detects and identifies periodic interference May. 7, 2013
8422697 Background noise estimation Apr. 16, 2013
8416958 Signal processing apparatus Apr. 9, 2013
8416964 Vehicular automatic gain control (AGC) microphone system and method for post processing optimization of a microphone signal Apr. 9, 2013
8396230 Speech enhancement device and method for the same Mar. 12, 2013

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