Patents
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)
07/1996
07/03/1996EP0720145A2 Speech pitch lag coding apparatus and method
07/03/1996EP0719483A1 Process for determining the type of coding to be selected for coding at least two signals
07/02/1996US5533052 Adaptive predictive coding with transform domain quantization based on block size adaptation, backward adaptive power gain control, split bit-allocation and zero input response compensation
07/02/1996CA2037780C Hybrid perceptual audio coding
07/01/1996CA2165352A1 Method for measuring speech masking properties
06/1996
06/27/1996WO1996019907A1 System for tdma mobile-to-mobile vselp codec bypass
06/27/1996WO1996019876A1 Method and apparatus for applying waveform prediction to subbands of a perceptual coding system
06/27/1996WO1996019798A1 Sound encoding system
06/27/1996DE4446558A1 Digitales Übertragungssystem mit verbessertem Decoder im Empfänger Digital transmission system with improved decoder in the receiver
06/27/1996CA2182790A1 High-frequency signal branching device
06/26/1996EP0719053A2 Decoder for audio signals belonging to compressed and coded audiovisual streams
06/26/1996EP0719050A2 Device for transmitting, receiving and decoding compressed audiovisual streams
06/26/1996EP0718982A2 Error concealment method and apparatus of audio signals
06/26/1996EP0718822A2 A low rate multi-mode CELP CODEC that uses backward prediction
06/26/1996EP0718821A2 Linear prediction filter coefficient quantizer and filter set
06/26/1996EP0718820A2 Speech coding apparatus, linear prediction coefficient analyzing apparatus and noise reducing apparatus
06/26/1996EP0718819A2 Low bit rate audio encoder and decoder
06/26/1996EP0717892A1 Real-time audio packet layer encoder
06/25/1996US5530655 Digital sub-band transmission system with transmission of an additional signal
06/25/1996CA2010830C Dynamic codebook for efficient speech coding based on algebraic codes
06/22/1996CA2161988A1 Linear prediction filter coefficient quantizer & filter set
06/20/1996WO1996018996A1 Speech processing
06/19/1996EP0717518A2 High efficiency audio encoding method and apparatus
06/19/1996EP0717392A1 Encoding method, decoding method, encoding-decoding method, encoder, decoder, and encoder-decoder
06/18/1996US5528727 Encoder for coding an input signal
06/18/1996US5528723 Digital speech coder and method utilizing harmonic noise weighting
06/18/1996US5528629 Method and device for coding an analog signal having a repetitive nature utilizing over sampling to simplify coding
06/13/1996WO1996018251A1 Method for substituting bad speech frames in a digital communication system
06/13/1996WO1996018187A1 Method and apparatus for parameterization of speech excitation waveforms
06/13/1996WO1996018186A1 Method and apparatus for synthesis of speech excitation waveforms
06/13/1996WO1996018185A1 Method and apparatus for characterization and reconstruction of speech excitation waveforms
06/12/1996EP0716409A2 Speech coding system
06/12/1996CN1124545A Data encoding method and apparatus, data decoding method and apparatus, data recording medium, and data transmission method
06/11/1996US5526506 Computer system having an improved memory architecture
06/11/1996US5526464 Reducing search complexity for code-excited linear prediction (CELP) coding
06/11/1996US5526366 Speech code processing
06/11/1996CA1338387C Vector excitation speech or audio coder for transmission or storage
06/06/1996WO1996017465A1 Dynamic selection of voice compression rate in a voice data modem
06/05/1996EP0715297A2 Speech coding parameter sequence reconstruction by classification and contour inventory
06/04/1996US5524170 For coding an input signal
05/1996
05/29/1996EP0714186A2 ATM transmission system
05/29/1996EP0714173A1 Method and device for encoding signal, method and device for decoding signal, recording medium, and signal transmitting device
05/29/1996EP0714089A2 Code-excited linear predictive coder and decoder with conversion filter for converting stochastic and impulse excitation signals
05/29/1996EP0713618A1 Transmission system for quasi-periodic signals
05/28/1996US5522011 Speech coding apparatus and method using classification rules
05/28/1996US5522009 Quantization process for a predictor filter for vocoder of very low bit rate
05/23/1996WO1996015627A2 System and method for transmitting picture or sound signals
05/23/1996WO1996015612A1 Computer-based multifunction personal communication system with caller id
05/23/1996WO1996009704A3 Detection of defective speech frames in a receiver of a digital speech communication system
05/22/1996EP0713208A2 Pitch lag estimation system
05/22/1996CN1123076A A method and system for audio information dissemination using various transmission modes
05/22/1996CN1123061A Vocoder asic
05/21/1996US5519807 Method of and device for quantizing excitation gains in speech coders based on analysis-synthesis techniques
05/21/1996US5519806 System for search of a codebook in a speech encoder
05/21/1996US5519805 Signal processing arrangements
05/21/1996US5519640 Multimedia frame relay codec
05/21/1996US5519394 Coding/decoding apparatus and method
05/21/1996US5519166 Signal processing method and sound source data forming apparatus
05/21/1996CA2053133C Method for coding and decoding a sampled analog signal having a repetitive nature and a device for coding and decoding by said method
05/21/1996CA2050979C Method for coding an analog signal having a repetitive nature and a device for coding by said method
05/15/1996EP0712131A1 Voice recorder and corresponding text generator
05/15/1996EP0520068B1 Encoder/decoder for multidimensional sound fields
05/14/1996US5517595 Decomposition in noise and periodic signal waveforms in waveform interpolation
05/14/1996US5517511 Digital transmission of acoustic signals over a noisy communication channel
05/09/1996WO1996013826A1 Coded data decoding device and video/audio multiplexed data decoding device using it
05/08/1996EP0710948A2 Apparatus and method for locating a plurality of roots of a line spectrum pair expression on unit circle
05/08/1996CN1122075A Recovering analog and digital signals from superimiposed analog and digital signals using linear prediction
05/01/1996EP0709981A1 Subband coding with pitchband predictive coding in each subband
05/01/1996EP0709827A2 Speech coding apparatus, speech decoding apparatus, speech coding and decoding method and a phase amplitude characteristic extracting apparatus for carrying out the method
05/01/1996EP0709006A1 Computationally efficient adaptive bit allocation for encoding method and apparatus with allowance for decoder spectral distortions
05/01/1996EP0709005A1 Computationally efficient adaptive bit allocation for coding method and apparatus
05/01/1996EP0708959A1 A fixed bit rate speech encoder/decoder
05/01/1996CN1121620A Audio signal coding/decoding method
04/1996
04/30/1996US5513297 Selective application of speech coding techniques to input signal segments
04/30/1996US5513183 Method for exploitation of voice inactivity to increase the capacity of a time division multiple access radio communications system
04/30/1996US5512939 Low bit rate audio-visual communication system having integrated perceptual speech and video coding
04/30/1996CA2061832C Speech parameter coding method and apparatus
04/30/1996CA2061462C Speech signal coding and decoding system transmitting allowance range information
04/24/1996EP0708533A2 Transmission signal
04/24/1996EP0708435A1 Encoding and decoding apparatus of line spectrum pair parameters
04/24/1996CN1121375A Method and apparatus for group encoding signals
04/24/1996CN1121374A Method and apparatus for mitigating audio degradation in a communication system
04/23/1996US5511093 Method for reducing data in a multi-channel data transmission
04/18/1996WO1996011531A2 Transmission system utilizing different coding principles
04/18/1996WO1996011468A1 Vector encoding method and encoder/decoder using the method
04/18/1996WO1996011467A1 Method, device, and systems for determining a masking level for a subband in a subband audio encoder
04/18/1996CA2176485A1 Method, device, and systems for determining a masking level for a subband in a subband audio encoder
04/17/1996EP0707308A1 Frame erasure or packet loss compensation method
04/16/1996US5508949 Fast subband filtering in digital signal coding
04/10/1996EP0706172A1 Low bit rate speech encoder and decoder
04/10/1996CN1120268A Device for quantization vector
04/09/1996US5506934 Post-filter for speech synthesizing apparatus
04/09/1996US5506899 Voice suppressor
04/03/1996EP0705052A2 Digital speech communication system
04/03/1996EP0704988A2 Cellular terminal with echo suppressor
04/03/1996EP0704836A2 Vector quantization apparatus
04/03/1996EP0704088A1 Method of encoding a signal containing speech
04/03/1996CN1119902A Method and apparatus for compressing, method for transmitting, and method and apparatus for expanding compressed multi-channel sound signals
04/02/1996US5504835 Voice reproducing device
04/02/1996US5504834 Pitch epoch synchronous linear predictive coding vocoder and method