| 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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| 02/17/1998 | US5719992 Constrained-stochastic-excitation coding |
| 02/17/1998 | US5719920 Method and apparatus for processing and downloading sound messages onto a permanent memory of a communication package |
| 02/17/1998 | US5719574 Digital audio transmission apparatus |
| 02/17/1998 | CA2075754C Method of coding 32-kb/s audio signals |
| 02/12/1998 | WO1998006195A1 Method and apparatus for echo data hiding in audio signals |
| 02/12/1998 | WO1998006091A1 Voice encoder, voice decoder, recording medium on which program for realizing voice encoding/decoding is recorded and mobile communication apparatus |
| 02/12/1998 | WO1998006090A1 Speech/audio coding with non-linear spectral-amplitude transformation |
| 02/12/1998 | DE19643900C1 Audio signal post filter, especially for speech signals |
| 02/11/1998 | EP0823829A2 Digital hearing aid system |
| 02/11/1998 | EP0823792A2 Audio signal processing circuit |
| 02/11/1998 | EP0823149A2 Method and arrangement for coding and decoding signals |
| 02/10/1998 | US5717827 Text-to-speech system using vector quantization based speech enconding/decoding |
| 02/10/1998 | US5717825 Algebraic code-excited linear prediction speech coding method |
| 02/10/1998 | US5717824 Adaptive speech coder having code excited linear predictor with multiple codebook searches |
| 02/10/1998 | US5717823 Speech-rate modification for linear-prediction based analysis-by-synthesis speech coders |
| 02/10/1998 | US5717822 Computational complexity reduction during frame erasure of packet loss |
| 02/10/1998 | US5717821 Method, apparatus and recording medium for coding of separated tone and noise characteristic spectral components of an acoustic sibnal |
| 02/10/1998 | US5717819 Methods and apparatus for encoding/decoding speech signals at low bit rates |
| 02/10/1998 | US5717815 Compression data editing apparatus |
| 02/10/1998 | US5717764 Global masking thresholding for use in perceptual coding |
| 02/10/1998 | US5717724 Voice encoding and voice decoding apparatus |
| 02/10/1998 | US5717670 Information compacting method and apparatus, compacted information expanding method and apparatus, compacted information recording/transmitting apparatus, compacted information receiving apparatus and recording medium |
| 02/07/1998 | CA2212131A1 Digital hearing aid system |
| 02/05/1998 | WO1998005030A1 Method and apparatus for searching an excitation codebook in a code excited linear prediction (clep) coder |
| 02/05/1998 | WO1998005029A1 Speech coding |
| 02/05/1998 | WO1997045830A3 A method for coding human speech and an apparatus for reproducing human speech so coded |
| 02/05/1998 | CA2261956A1 Method and apparatus for searching an excitation codebook in a code excited linear prediction (clep) coder |
| 02/04/1998 | EP0821849A1 Reduced complexity signal transmission system |
| 02/04/1998 | EP0821848A1 Reduced complexity signal transmission system |
| 02/04/1998 | EP0821824A1 A method to determine the excitation pulse positions within a speech frame |
| 02/04/1998 | EP0746845A4 Adaptive error control for adpcm speech coders |
| 02/04/1998 | EP0484339B1 Digital speech coder with vector excitation source having improved speech quality |
| 02/03/1998 | US5715366 Method for the coded transmission of voice signals |
| 02/03/1998 | US5715365 Method of analyzing a digitized speech signal |
| 02/03/1998 | US5715363 Method and apparatus for processing speech |
| 02/03/1998 | US5715362 Method of transmitting and receiving coded speech |
| 02/03/1998 | US5714951 Method and apparatus of reproducing digital data |
| 01/29/1998 | DE19629946A1 LPC analysis and synthesis method for basic frequency descriptive functions |
| 01/28/1998 | EP0820685A1 Transcoder with prevention of tandem coding of speech |
| 01/28/1998 | EP0820663A1 7-channel transmission, compatible with 5-channel transmission and 2-channel transmission |
| 01/28/1998 | EP0820627A1 A method of coding an excitation pulse parameter sequence |
| 01/28/1998 | EP0820626A1 Waveform speech synthesis |
| 01/28/1998 | EP0820625A2 Dictation system |
| 01/28/1998 | EP0820624A1 System for compression and decompression of audio signals for digital transmission |
| 01/27/1998 | US5712955 Method and apparatus for encoding digital signal, method and apparatus for decoding digital signal, and recording medium for encoded signals |
| 01/27/1998 | US5712808 Digital signal processing |
| 01/22/1998 | WO1998003037A1 Coding and decoding of audio signals by using intensity stereo and prediction processes |
| 01/22/1998 | WO1998003036A1 Process for coding and decoding stereophonic spectral values |
| 01/22/1998 | WO1998002971A1 A method of coding and decoding audio signals |
| 01/21/1998 | EP0820052A2 Voice-coding-and-transmission system |
| 01/21/1998 | EP0819303A1 Predictive split-matrix quantization of spectral parameters for efficient coding of speech |
| 01/21/1998 | EP0819302A1 Arrangement and method relating to speech transmission and a telecommunications system comprising such arrangement |
| 01/21/1998 | EP0708959A4 A fixed bit rate speech encoder/decoder |
| 01/21/1998 | CN1170925A Karaoke singer rating apparatus and method, and storage medium therefor |
| 01/20/1998 | US5710863 Speech signal quantization using human auditory models in predictive coding systems |
| 01/20/1998 | US5710862 Method and apparatus for reducing an undesirable characteristic of a spectral estimate of a noise signal between occurrences of voice signals |
| 01/20/1998 | US5710834 Method of processing image data |
| 01/20/1998 | US5710781 Method for communicating signals |
| 01/15/1998 | WO1998001848A1 Speech synthesis system |
| 01/15/1998 | DE19706516C1 Encoding method for discrete signals and decoding of encoded discrete signals |
| 01/15/1998 | DE19628292A1 Verfahren zum Codieren und Decodieren von Stereoaudiospektralwerten A method of encoding and decoding stereo audio spectral values |
| 01/15/1998 | CA2259374A1 Speech synthesis system |
| 01/14/1998 | EP0818739A2 Signal interpolation and decimation exploiting filter symmetry |
| 01/14/1998 | EP0818737A2 Signal interpolation and decimation exploiting filter symmetry |
| 01/14/1998 | EP0818102A1 Communication package with apparatus and method for storing and retrieving a permanent message |
| 01/14/1998 | EP0818037A1 Method and apparatus for efficient implementation of single-sideband filter banks providing accurate measures of spectral magnitude and phase |
| 01/14/1998 | EP0772764B1 Process and device for determining the tonality of an audio signal |
| 01/14/1998 | CN1170492A System for TDMA mobile-to-mobile vselp codec bypass |
| 01/14/1998 | CN1170203A Audio data decoding apparatus and audio data coding/decoding system |
| 01/14/1998 | CN1170190A Voice encoding/decoding apparatus |
| 01/14/1998 | CN1170189A Audio encoding apparatus and audio encoding and decoding apparatus |
| 01/13/1998 | US5708757 Method of determining parameters of a pitch synthesis filter in a speech coder, and speech coder implementing such method |
| 01/13/1998 | US5708756 Speech processing system |
| 01/13/1998 | US5708754 Method for real-time reduction of voice telecommunications noise not measurable at its source |
| 01/13/1998 | US5708723 Recording and reproducing apparatus for audio signal |
| 01/08/1998 | WO1998000837A1 Audio signal coding and decoding methods and audio signal coder and decoder |
| 01/07/1998 | EP0817395A1 Adaptive transform coding system and corresponding decoding system |
| 01/07/1998 | EP0817045A2 Mixing and splitting multiple independent audio data streams in kernel space |
| 01/07/1998 | EP0815555A1 Method and system for coding human speech for subsequent reproduction thereof |
| 01/07/1998 | EP0815554A1 Analysis-by-synthesis linear predictive speech coder |
| 01/07/1998 | EP0746913B1 Process for the cascade coding and decoding of audio data |
| 01/07/1998 | CN1169570A Pitch extracting method in speech processing unit |
| 01/06/1998 | US5706396 Error protection system for a sub-band coder suitable for use in an audio signal processor |
| 01/06/1998 | US5706394 Telecommunications speech signal improvement by reduction of residual noise |
| 01/06/1998 | US5706391 Method and an apparatus for processing information |
| 12/31/1997 | CN1036886C Method of and system for coding analogue signal |
| 12/30/1997 | US5704003 RCELP coder |
| 12/30/1997 | US5704002 Process and device for minimizing an error in a speech signal using a residue signal and a synthesized excitation signal |
| 12/30/1997 | US5704001 Sensitivity weighted vector quantization of line spectral pair frequencies |
| 12/30/1997 | US5703881 Multi-subscriber unit for radio communication system and method |
| 12/30/1997 | US5703877 Acquisition and error recovery of audio data carried in a packetized data stream |
| 12/29/1997 | EP0814459A2 Wideband speech coder and decoder |
| 12/29/1997 | EP0814458A2 Improvements in or relating to speech coding |
| 12/29/1997 | EP0813736A1 Depth-first algebraic-codebook search for fast coding of speech |
| 12/24/1997 | WO1997049200A1 Communication protocol for spread spectrum wireless communication system |
| 12/24/1997 | CN1168751A Method for substituting bar speech frames in digital communication system |
| 12/23/1997 | US5701392 Depth-first algebraic-codebook search for fast coding of speech |
| 12/23/1997 | US5701391 Method and system for compressing a speech signal using envelope modulation |
| 12/23/1997 | US5701390 Synthesis of MBE-based coded speech using regenerated phase information |
| 12/21/1997 | CA2355194A1 Wideband speech decoder |