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Class Information
Number: 704/233
Name: Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression > Speech signal processing > Recognition > Detect speech in noise
Description: Subject matter wherein the discrete components are distinguished from noise










Patents under this class:
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Patent Number Title Of Patent Date Issued
6104993 Apparatus and method for rate determination in a communication system Aug. 15, 2000
6104994 Method for speech coding under background noise conditions Aug. 15, 2000
6101466 Method and system for improved discontinuous speech transmission Aug. 8, 2000
6091969 Method and apparatus for inband signaling control of vocoder bypass Jul. 18, 2000
6088670 Voice detector Jul. 11, 2000
6078882 Method and apparatus for extracting speech spurts from voice and reproducing voice from extracted speech spurts Jun. 20, 2000
6076057 Unsupervised HMM adaptation based on speech-silence discrimination Jun. 13, 2000
6070089 Method and apparatus for control of vocoder bypass utilizing inband signaling May. 30, 2000
6067513 Speech recognition method and speech recognition apparatus May. 23, 2000
6067520 System and method of recognizing continuous mandarin speech utilizing chinese hidden markou models May. 23, 2000
6061647 Voice activity detector May. 9, 2000
6061651 Apparatus that detects voice energy during prompting by a voice recognition system May. 9, 2000
6044340 Accelerated convolution noise elimination Mar. 28, 2000
6044341 Noise suppression apparatus and recording medium recording processing program for performing noise removal from voice Mar. 28, 2000
6044342 Speech spurt detecting apparatus and method with threshold adapted by noise and speech statistics Mar. 28, 2000
6038532 Signal processing device for cancelling noise in a signal Mar. 14, 2000
6023674 Non-parametric voice activity detection Feb. 8, 2000
6011846 Methods and apparatus for echo suppression Jan. 4, 2000
6009396 Method and system for microphone array input type speech recognition using band-pass power distribution for sound source position/direction estimation Dec. 28, 1999
6001131 Automatic target noise cancellation for speech enhancement Dec. 14, 1999
6002762 Method and apparatus for making nonintrusive noise and speech level measurements on voice calls Dec. 14, 1999
5999900 Reduced redundancy test signal similar to natural speech for supporting data manipulation functions in testing telecommunications equipment Dec. 7, 1999
5999901 Telephone network apparatus and method using echo delay and attenuation Dec. 7, 1999
5995826 Methods for conditional tone responsive reconnection to directory assistance center Nov. 30, 1999
5995924 Computer-based method and apparatus for classifying statement types based on intonation analysis Nov. 30, 1999
5995927 Method for performing stochastic matching for use in speaker verification Nov. 30, 1999
5991718 System and method for noise threshold adaptation for voice activity detection in nonstationary noise environments Nov. 23, 1999
5983176 Evaluation of media content in media files Nov. 9, 1999
5983186 Voice-activated interactive speech recognition device and method Nov. 9, 1999
5978761 Method and arrangement for producing comfort noise in a linear predictive speech decoder Nov. 2, 1999
5978763 Voice activity detection using echo return loss to adapt the detection threshold Nov. 2, 1999
5974386 Timeline display of sound characteristics with thumbnail video Oct. 26, 1999
5970441 Detection of periodicity information from an audio signal Oct. 19, 1999
5970446 Selective noise/channel/coding models and recognizers for automatic speech recognition Oct. 19, 1999
5970447 Detection of tonal signals Oct. 19, 1999
5970452 Method for detecting a signal pause between two patterns which are present on a time-variant measurement signal using hidden Markov models Oct. 19, 1999
5966690 Speech recognition and synthesis systems which distinguish speech phonemes from noise Oct. 12, 1999
5963899 Method and system for region based filtering of speech Oct. 5, 1999
5963901 Method and device for voice activity detection and a communication device Oct. 5, 1999
5960397 System and method of recognizing an acoustic environment to adapt a set of based recognition models to the current acoustic environment for subsequent speech recognition Sep. 28, 1999
5960399 Client/server speech processor/recognizer Sep. 28, 1999
5953380 Noise canceling method and apparatus therefor Sep. 14, 1999
5950154 Method and apparatus for measuring the noise content of transmitted speech Sep. 7, 1999
5950159 Word spotting using both filler and phone recognition Sep. 7, 1999
5946649 Esophageal speech injection noise detection and rejection Aug. 31, 1999
5937379 Canceler of speech and noise, and speech recognition apparatus Aug. 10, 1999
5933801 Method for transforming a speech signal using a pitch manipulator Aug. 3, 1999
5933807 Screen control apparatus and screen control method Aug. 3, 1999
5930749 Monitoring, identification, and selection of audio signal poles with characteristic behaviors, for separation and synthesis of signal contributions Jul. 27, 1999
5920834 Echo canceller with talk state determination to control speech processor functional elements in a digital telephone system Jul. 6, 1999

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