| Patents for G10L 19 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis (31,960) |
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| 03/02/1994 | CN1083294A Time variable spectral analysis based on interpolation for speech coding |
| 03/01/1994 | CA2005117C Noise reduction system |
| 03/01/1994 | CA1327404C Voice coding apparatus |
| 02/16/1994 | EP0583233A2 Radio telephony system using a multisubscriber unit |
| 02/16/1994 | EP0582921A2 Low-delay audio signal coder, using analysis-by-synthesis techniques |
| 02/15/1994 | CA2027705C Speech coding system utilizing a recursive computation technique for improvement in processing speed |
| 02/10/1994 | DE4236315C1 Verfahren zur Sprachcodierung A method of speech coding |
| 02/08/1994 | US5285520 Predictive coding apparatus |
| 02/08/1994 | US5285498 Method and apparatus for coding audio signals based on perceptual model |
| 02/08/1994 | CA2005665C Communication system capable of improving a speech quality by a pair of pulse producing units |
| 02/02/1994 | EP0581435A2 Audio data coding methods and apparatus |
| 01/26/1994 | EP0580454A2 Coding and decoding of digital data |
| 01/26/1994 | EP0360265B1 Communication system capable of improving a speech quality by classifying speech signals |
| 01/20/1994 | WO1994001860A1 Time variable spectral analysis based on interpolation for speech coding |
| 01/20/1994 | CA2117063A1 Time variable spectral analysis based on interpolation for speech coding |
| 01/19/1994 | CN1081037A "method and system for the arrangement of vocoder data for the masking of transmission channel induced errors" |
| 01/18/1994 | US5280562 Speech coding apparatus with single-dimension acoustic prototypes for a speech recognizer |
| 01/18/1994 | US5280561 Method for processing audio signals in a sub-band coding system |
| 01/12/1994 | EP0578436A1 Selective application of speech coding techniques |
| 01/12/1994 | EP0578063A1 Quantization bit number allocation by first selecting a subband signal having a maximum of signal to mask ratios in an input signal |
| 01/12/1994 | EP0577809A1 Double mode long term prediction in speech coding. |
| 01/12/1994 | EP0455738B1 Low bit rate transform coder, decoder and encoder/decoder for high-quality audio |
| 01/11/1994 | US5278944 Speech coding circuit |
| 01/11/1994 | US5278942 Speech coding apparatus having speaker dependent prototypes generated from nonuser reference data |
| 01/11/1994 | US5278912 Audio frequency signal compressor |
| 01/11/1994 | CA2024742C Speech coding apparatus using multimode coding |
| 01/11/1994 | CA2006487C Communication system capable of improving a speech quality by effectively calculating excitation multipulses |
| 01/05/1994 | EP0577488A1 Speech coding method and apparatus for the same |
| 01/04/1994 | US5276766 Fast algorithm for deriving acoustic prototypes for automatic speech recognition |
| 12/29/1993 | EP0575815A1 Speech recognition method |
| 12/29/1993 | EP0575511A1 Speech coder and method having spectral interpolation and fast codebook search |
| 12/28/1993 | US5274741 Speech coding apparatus for separately processing divided signal vectors |
| 12/23/1993 | WO1993026099A1 Method of detecting errors in digitized data-reduced audio and data signals |
| 12/22/1993 | EP0574523A1 Variable bit rate speech encoder |
| 12/22/1993 | CN1023280C Digital transmission system using subband coding of digital signal |
| 12/16/1993 | DE4219400A1 Verfahren für die Fehlererkennung digitalisierter, datenreduzierter Ton- und Datensignale Method for error detection digitized, data-reduced audio and data signals |
| 12/15/1993 | CN1023160C Method of digital speech coder with vector excitation source |
| 12/14/1993 | US5271089 Speech parameter encoding method capable of transmitting a spectrum parameter at a reduced number of bits |
| 12/14/1993 | CA2013247C Vector quantizer search arrangement |
| 12/09/1993 | WO1993025016A1 Dynamic loader |
| 12/09/1993 | WO1993025007A1 Method for compressing sound information and apparatus for reproducing sound information |
| 12/08/1993 | EP0573398A2 C.E.L.P. Vocoder |
| 12/08/1993 | EP0573358A1 Variable speed voice synthesizer |
| 12/08/1993 | EP0573216A2 CELP vocoder |
| 12/08/1993 | EP0573215A2 Vocoder synchronization |
| 12/08/1993 | EP0572456A1 Signal processing arrangements |
| 12/08/1993 | EP0379587B1 Encoder/decoder apparatus |
| 12/07/1993 | US5268991 Apparatus for encoding voice spectrum parameters using restricted time-direction deformation |
| 12/06/1993 | CA2097548A1 Method and device for vocal synthesis at variable speed |
| 12/05/1993 | CA2095882A1 Voice messaging synchronization |
| 12/02/1993 | DE4231918C1 Verfahren für die Codierung von Sprachsignalen A method for encoding speech signals |
| 12/01/1993 | EP0572263A2 Variable length code decoder for video decompression operations |
| 12/01/1993 | EP0572262A2 Decoder for compressed video signals |
| 11/30/1993 | US5267317 Method and apparatus for smoothing pitch-cycle waveforms |
| 11/30/1993 | CA1324833C Method and apparatus for synthesizing speech without voicing or pitch information |
| 11/29/1993 | CA2096585A1 Decoder for compressed video signals |
| 11/29/1993 | CA2096584A1 Variable length code decoder for video decompression operations |
| 11/24/1993 | EP0570365A1 Digital speech coder having optimized signal energy parameters |
| 11/24/1993 | EP0570362A1 Digital speech decoder having a postfilter with reduced spectral distortion |
| 11/23/1993 | US5265219 Speech encoder using a soft interpolation decision for spectral parameters |
| 11/23/1993 | US5265190 CELP vocoder with efficient adaptive codebook search |
| 11/23/1993 | US5265167 Speech coding and decoding apparatus |
| 11/18/1993 | EP0570171A1 Digital coding of speech signals |
| 11/18/1993 | EP0570131A1 Compression encoding and decoding of digital audio signals |
| 11/16/1993 | US5263119 Gain-shape vector quantization method and apparatus |
| 11/16/1993 | US5263088 Adaptive bit assignment transform coding according to power distribution of transform coefficients |
| 11/10/1993 | EP0568979A1 Speech recognition adapter for telephone system |
| 11/10/1993 | EP0568657A1 Prioritization method and device for speech frames coded by a linear predictive coder |
| 11/09/1993 | US5261027 Code excited linear prediction speech coding system |
| 11/09/1993 | US5260980 Digital signal encoder |
| 11/02/1993 | CA1323934C Speech processing apparatus |
| 10/28/1993 | WO1993021627A1 Digital signal coding |
| 10/20/1993 | EP0566407A2 Cellular telephone network including a local area network |
| 10/20/1993 | EP0565947A1 Procedure for including digital information in an audio signal prior to channel coding |
| 10/19/1993 | US5255339 Analyzing and coding input speech |
| 10/18/1993 | CA2093843A1 Cellular telephone with datagram and dispatch operation |
| 10/13/1993 | EP0285276B1 Coding of acoustic waveforms |
| 10/12/1993 | US5253326 Prioritization method and device for speech frames coded by a linear predictive coder |
| 10/12/1993 | US5253269 Delta-coded lag information for use in a speech coder |
| 10/06/1993 | EP0564089A1 A method and appartus for the perceptual coding of audio signals |
| 10/06/1993 | EP0563229A1 Speech coding |
| 10/05/1993 | US5251261 Device for the digital recording and reproduction of speech signals |
| 09/30/1993 | WO1993019536A1 Data compression process during storage and/or transmissioin of digital audio signals for studio applications with perceptive coding and variable length code |
| 09/30/1993 | WO1993019459A1 High-efficiency encoding method |
| 09/30/1993 | DE3733772C2 Multi-Signalprozessorsystem Multi-signal processor system |
| 09/30/1993 | CA2131806A1 Data compression process during storage and/or transmission of digital audio signals for studio applications with perceptive coding and variable length code |
| 09/29/1993 | EP0562777A1 Method of speech coding |
| 09/22/1993 | EP0561454A2 Method and apparatus for editing an audio signal |
| 09/22/1993 | EP0560931A1 Methods for speech quantization and error correction |
| 09/22/1993 | EP0414838B1 Process for transmitting a signal |
| 09/21/1993 | US5247579 Methods for speech transmission |
| 09/16/1993 | WO1993018482A1 Method and apparatus for encoding and decoding signals with structures |
| 09/16/1993 | WO1993018383A1 Variable bit rate speech encoder |
| 09/15/1993 | EP0560413A2 Adaptive bit allocation for audio encoder and decoder |
| 09/14/1993 | US5245694 User-programmable voice notification device for security alarm systems |
| 09/14/1993 | US5245662 Speech coding system |
| 09/08/1993 | EP0559383A1 A method and apparatus for coding audio signals based on perceptual model |
| 09/08/1993 | EP0559348A2 Rate control loop processor for perceptual encoder/decoder |
| 09/08/1993 | EP0559346A1 Method and apparatus for two-component signal compression |
| 09/08/1993 | EP0558492A1 A speech coding device |