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Class Information
Number: 704/208
Name: Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression > Speech signal processing > For storage or transmission > Frequency > Specialized information > Pitch > Voiced or unvoiced
Description: Subject matter wherein the specific speech
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7617094 |
Methods, apparatus, and products for identifying a conversation |
Nov. 10, 2009 |
| 7596487 |
Method of detecting voice activity in a signal, and a voice signal coder including a device for implementing the method |
Sep. 29, 2009 |
| 7596488 |
System and method for real-time jitter control and packet-loss concealment in an audio signal |
Sep. 29, 2009 |
| 7590524 |
Method of filtering speech signals to enhance quality of speech and apparatus thereof |
Sep. 15, 2009 |
| 7577564 |
Method and apparatus for detecting illicit activity by classifying whispered speech and normally phonated speech according to the relative energy content of formants and fricatives |
Aug. 18, 2009 |
| 7577565 |
Adaptive voice playout in VOP |
Aug. 18, 2009 |
| 7574451 |
System and method for speeding up database lookups for multiple synchronized data streams |
Aug. 11, 2009 |
| 7574357 |
Applications of sub-audible speech recognition based upon electromyographic signals |
Aug. 11, 2009 |
| 7567900 |
Harmonic structure based acoustic speech interval detection method and device |
Jul. 28, 2009 |
| 7567908 |
Differential dynamic content delivery with text display in dependence upon simultaneous speech |
Jul. 28, 2009 |
| 7565286 |
Method for recovery of lost speech data |
Jul. 21, 2009 |
| 7555310 |
Electronic apparatus and computer readable medium recorded voice operating program |
Jun. 30, 2009 |
| 7542787 |
Apparatus and method for providing hands-free operation of a device |
Jun. 2, 2009 |
| 7536298 |
Method of comfort noise generation for speech communication |
May. 19, 2009 |
| 7529664 |
Signal decomposition of voiced speech for CELP speech coding |
May. 5, 2009 |
| 7505594 |
Discontinuous transmission (DTX) controller system and method |
Mar. 17, 2009 |
| 7505950 |
Soft alignment based on a probability of time alignment |
Mar. 17, 2009 |
| 7478040 |
Method for adaptive filtering |
Jan. 13, 2009 |
| 7478041 |
Speech recognition apparatus, speech recognition apparatus and program thereof |
Jan. 13, 2009 |
| 7457746 |
Pitch prediction for packet loss concealment |
Nov. 25, 2008 |
| 7424427 |
Systems and methods for classifying audio into broad phoneme classes |
Sep. 9, 2008 |
| 7412379 |
Time-scale modification of signals |
Aug. 12, 2008 |
| 7386444 |
Hybrid speech coding and system |
Jun. 10, 2008 |
| 7376557 |
Method and apparatus of overlapping and summing speech for an output that disrupts speech |
May. 20, 2008 |
| 7366658 |
Noise pre-processor for enhanced variable rate speech codec |
Apr. 29, 2008 |
| 7343284 |
Method and system for speech processing for enhancement and detection |
Mar. 11, 2008 |
| 7337107 |
Perceptual harmonic cepstral coefficients as the front-end for speech recognition |
Feb. 26, 2008 |
| 7337108 |
System and method for providing high-quality stretching and compression of a digital audio signal |
Feb. 26, 2008 |
| 7295982 |
System and method for automatic verification of the understandability of speech |
Nov. 13, 2007 |
| 7277916 |
Dynamic translation between data network-based protocol in a data-packet-network and interactive voice response functions of a telephony network |
Oct. 2, 2007 |
| 7272551 |
Computational effectiveness enhancement of frequency domain pitch estimators |
Sep. 18, 2007 |
| 7266493 |
Pitch determination based on weighting of pitch lag candidates |
Sep. 4, 2007 |
| 7246059 |
Method for fast dynamic estimation of background noise |
Jul. 17, 2007 |
| 7243062 |
Audio segmentation with energy-weighted bandwidth bias |
Jul. 10, 2007 |
| 7233894 |
Low-frequency band noise detection |
Jun. 19, 2007 |
| 7233899 |
Speech recognition system using normalized voiced segment spectrogram analysis |
Jun. 19, 2007 |
| 7228271 |
Telephone apparatus |
Jun. 5, 2007 |
| 7222070 |
Hybrid speech coding and system |
May. 22, 2007 |
| 7206739 |
Excitation codebook search method in a speech coding system |
Apr. 17, 2007 |
| 7191128 |
Method and system for distinguishing speech from music in a digital audio signal in real time |
Mar. 13, 2007 |
| 7191123 |
Gain-smoothing in wideband speech and audio signal decoder |
Mar. 13, 2007 |
| 7171357 |
Voice-activity detection using energy ratios and periodicity |
Jan. 30, 2007 |
| 7149683 |
Method and device for robust predictive vector quantization of linear prediction parameters in variable bit rate speech coding |
Dec. 12, 2006 |
| 7146310 |
Low bit-rate coding of unvoiced segments of speech |
Dec. 5, 2006 |
| 7139700 |
Hybrid speech coding and system |
Nov. 21, 2006 |
| 7127392 |
Device for and method of detecting voice activity |
Oct. 24, 2006 |
| 7120576 |
Low-complexity music detection algorithm and system |
Oct. 10, 2006 |
| 7120578 |
Silence description coding for multi-rate speech codecs |
Oct. 10, 2006 |
| 7117150 |
Voice detecting method and apparatus using a long-time average of the time variation of speech features, and medium thereof |
Oct. 3, 2006 |
| 7113522 |
Enhanced conversion of wideband signals to narrowband signals |
Sep. 26, 2006 |
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