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Class Information
Number: 704/226
Name: Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression > Speech signal processing > For storage or transmission > Noise
Description: Subject matter wherein the coding reduces the effects of undesired signal components.

Sub-classes under this class:

Class Number Class Name Patents
704/228 Post-transmission 439
704/227 Pretransmission 248

Patents under this class:

Patent Number Title Of Patent Date Issued
8712770 Method, preprocessor, speech recognition system, and program product for extracting target speech by removing noise Apr. 29, 2014
8712769 Apparatus and method for noise removal by spectral smoothing Apr. 29, 2014
8712768 System and method for enhanced artificial bandwidth expansion Apr. 29, 2014
8712762 Noise suppression in speech signals 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
8706493 Controllable prosody re-estimation system and method and computer program product thereof Apr. 22, 2014
8706483 Partial speech reconstruction Apr. 22, 2014
8706482 Voice coder with multiple-microphone system and strategic microphone placement to deter obstruction for a digital communication device Apr. 22, 2014
8705759 Method for determining a signal component for reducing noise in an input signal Apr. 22, 2014
8694311 Method for processing noisy speech signal, apparatus for same and computer-readable recording medium Apr. 8, 2014
8694310 Remote control server protocol system Apr. 8, 2014
8682662 Method and apparatus for voice activity determination Mar. 25, 2014
8682659 Geotagged environmental audio for enhanced speech recognition accuracy Mar. 25, 2014
8682658 Audio equipment including means for de-noising a speech signal by fractional delay filtering, in particular for a "hands-free" telephony system Mar. 25, 2014
8682657 Apparatus and method for improving communication sound quality in mobile terminal Mar. 25, 2014
8682018 Microphone array with rear venting Mar. 25, 2014
8682006 Noise suppression based on null coherence Mar. 25, 2014
8676571 Audio signal processing system and audio signal processing method Mar. 18, 2014
8670554 Method for encoding multiple microphone signals into a source-separable audio signal for network transmission and an apparatus for directed source separation Mar. 11, 2014
8666737 Noise power estimation system, noise power estimating method, speech recognition system and speech recognizing method Mar. 4, 2014
8666736 Noise-reduction processing of speech signals Mar. 4, 2014
8660842 Enhancing speech recognition using visual information Feb. 25, 2014
8660281 Method and system for a multi-microphone noise reduction Feb. 25, 2014
8655657 Identifying media content Feb. 18, 2014
8655656 Method and system for assessing intelligibility of speech represented by a speech signal Feb. 18, 2014
8655651 Method, computer, computer program and computer program product for speech quality estimation Feb. 18, 2014
8654992 Sound processing apparatus, method for correcting phase difference, and computer readable storage medium Feb. 18, 2014
8645129 Integrated speech intelligibility enhancement system and acoustic echo canceller Feb. 4, 2014
8639502 Speaker model-based speech enhancement system Jan. 28, 2014
8635064 Information processing apparatus and operation method thereof Jan. 21, 2014
8630850 Signal processing method, apparatus and program Jan. 14, 2014
8626502 Improving speech intelligibility utilizing an articulation index Jan. 7, 2014
8626501 Encoding apparatus, encoding method, decoding apparatus, decoding method, and program Jan. 7, 2014
8626500 Apparatus and method for noise reduction and sound recording Jan. 7, 2014
8626495 Method of correcting errors in binary masks Jan. 7, 2014
8620672 Systems, methods, apparatus, and computer-readable media for phase-based processing of multichannel signal Dec. 31, 2013
8620651 Bit error concealment methods for speech coding Dec. 31, 2013
8620650 Rejecting noise with paired microphones Dec. 31, 2013
8615394 Restoration of noise-reduced speech Dec. 24, 2013
8615393 Noise suppressor for speech recognition Dec. 24, 2013
8615092 Sound processing device, correcting device, correcting method and recording medium Dec. 24, 2013
8612225 Voice recognition device, voice recognition method, and voice recognition program Dec. 17, 2013
8612222 Signature noise removal Dec. 17, 2013
8612217 Method and system for noise reduction Dec. 17, 2013
8612215 Method and apparatus to extract important frequency component of audio signal and method and apparatus to encode and/or decode audio signal using the same Dec. 17, 2013
8606573 Voice recognition improved accuracy in mobile environments Dec. 10, 2013
8606571 Spatial selectivity noise reduction tradeoff for multi-microphone systems Dec. 10, 2013
8606566 Speech enhancement through partial speech reconstruction Dec. 10, 2013
8605599 Method and apparatus for processing asynchronous audio stream Dec. 10, 2013

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