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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
8380497 Methods and apparatus for noise estimation Feb. 19, 2013
8379879 Active noise reduction system Feb. 19, 2013
8374868 Method of recognizing speech Feb. 12, 2013
8374861 Voice activity detector Feb. 12, 2013
8374855 System for suppressing rain noise Feb. 12, 2013
8374854 Spatio-temporal speech enhancement technique based on generalized eigenvalue decomposition Feb. 12, 2013
8374851 Voice activity detector and method Feb. 12, 2013
8370157 Aircraft speech recognition and voice training data storage and retrieval methods and apparatus Feb. 5, 2013
8370153 Speech analyzer and speech analysis method Feb. 5, 2013
8370139 Feature-vector compensating apparatus, feature-vector compensating method, and computer program product Feb. 5, 2013
8370137 Noise estimating apparatus and method Feb. 5, 2013
8370136 Method and apparatus for generating noises Feb. 5, 2013
8370135 Method and apparatus for encoding and decoding Feb. 5, 2013
8370132 Distributed apparatus and method for a perceptual quality measurement service Feb. 5, 2013
8364482 System and method for obtaining a message type identifier through an in-band modem Jan. 29, 2013
8364480 Method and apparatus for controlling echo in the coded domain Jan. 29, 2013
8364479 System for speech signal enhancement in a noisy environment through corrective adjustment of spectral noise power density estimations Jan. 29, 2013
8364478 Audio signal processing apparatus, audio signal processing method, and communication terminal Jan. 29, 2013
8364477 Method and apparatus for increasing speech intelligibility in noisy environments Jan. 29, 2013
8363854 Device and method for automatically adjusting gain Jan. 29, 2013
8363850 Audio signal processing method and apparatus for the same Jan. 29, 2013
8358796 Method and acoustic signal processing system for binaural noise reduction Jan. 22, 2013
8355911 Method of lost frame concealment and device Jan. 15, 2013
8355910 Methods and apparatus for audio watermarking a substantially silent media content presentation Jan. 15, 2013
8352257 Spectro-temporal varying approach for speech enhancement Jan. 8, 2013
8352250 Filtering speech Jan. 8, 2013
8352249 Encoding device, decoding device, and method thereof Jan. 8, 2013
8346545 Model-based distortion compensating noise reduction apparatus and method for speech recognition Jan. 1, 2013
8340964 Speech and music discriminator for multi-media application Dec. 25, 2012
8340963 Echo suppressing system, echo suppressing method, recording medium, echo suppressor, sound output device, audio system, navigation system and mobile object Dec. 25, 2012
8340962 Method and apparatus for adaptively encoding and decoding high frequency band Dec. 25, 2012
8340943 Method and system for separating musical sound source Dec. 25, 2012
8335686 Method and apparatus of audio switching Dec. 18, 2012
8335685 Ambient noise compensation system robust to high excitation noise Dec. 18, 2012
8326621 Repetitive transient noise removal Dec. 4, 2012
8326617 Speech enhancement with minimum gating Dec. 4, 2012
8326616 Dynamic noise reduction using linear model fitting Dec. 4, 2012
8326614 Speech enhancement system Dec. 4, 2012
8326612 Non-speech section detecting method and non-speech section detecting device Dec. 4, 2012
8315862 Audio signal quality enhancement apparatus and method Nov. 20, 2012
8311816 Noise shaping for predictive audio coding apparatus Nov. 13, 2012
8311815 Method, apparatus, and program for encoding digital signal, and method, apparatus, and program for decoding digital signal Nov. 13, 2012
8306821 Sub-band periodic signal enhancement system Nov. 6, 2012
8306815 Speech dialog control based on signal pre-processing Nov. 6, 2012
8301439 Method and apparatus to encode/decode low bit-rate audio signal by approximiating high frequency envelope with strongly correlated low frequency codevectors Oct. 30, 2012
8296135 Noise cancellation system and method Oct. 23, 2012
8296133 Voice activity decision base on zero crossing rate and spectral sub-band energy Oct. 23, 2012
8290180 Signal processing device, signal processing method, and program therefor Oct. 16, 2012
8285545 Voice command acquisition system and method Oct. 9, 2012
8285543 Circular frequency translation with noise blending Oct. 9, 2012











 
 
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