Patents
Sitemap › G10 - Musical instruments; Acoustics › G10L - Speech analysis or synthesis; Speech recognition; Speech or voice processing; Speech or audio coding or decoding › 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
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)
10/1995
10/04/1995EP0675492A1 Method and apparatus for data encoding and data recording medium
10/04/1995CN1109697A Vector quantizer method and apparatus
10/03/1995US5455888 Speech bandwidth extension method and apparatus
10/03/1995CA1337217C Speech coding
09/1995
09/28/1995WO1995026094A1 Pcs pocket phone/microcell communication over-air protocol
09/28/1995CA2186031A1 Pcs pocket phone/microcell communication over-air protocol
09/27/1995EP0674306A2 Signal bias removal for robust telephone speech recognition
09/27/1995EP0673576A1 Apparatus for and method of speech digitizing
09/27/1995EP0673566A1 Transmission system implementing different coding principles
09/27/1995CN1109264A Transmission system comprising at least a coder
09/27/1995CN1109263A Transmission system comprising at least a coder
09/27/1995CN1029902C Transmission system and receiver to be used in transmission system
09/26/1995US5454011 Apparatus and method for orthogonally transforming a digital information signal with scale down to prevent processing overflow
09/26/1995US5453986 Dual port interface for a computer-based multifunction personal communication system
09/25/1995CA2141010A1 Signal bias removal for robust telephone speech recognition
09/24/1995CA2143537A1 Mobile radio with transmit command control and mobile radio system
09/20/1995EP0673167A2 Signal encoding and decoding system allowing adding of signals in a form of frequency sample sequence upon decoding
09/20/1995EP0673018A2 Linear prediction coefficient generation during frame erasure or packet loss
09/20/1995EP0673017A2 Excitation signal synthesis during frame erasure or packet loss
09/20/1995EP0673016A2 Linear prediction coefficient generation during frame erasure or packet loss
09/20/1995EP0673015A2 Computational complexity reduction during frame erasure or packet loss
09/20/1995EP0673014A2 Acoustic signal transform coding method and decoding method
09/20/1995EP0673013A1 Signal encoding and decoding system
09/19/1995US5452289 Computer-based multifunction personal communications system
09/19/1995US5451951 Method of, and system for, coding analogue signals
09/19/1995CA2144268A1 Signal encoding and decoding system
09/14/1995WO1995024776A2 Transmission system for quasi-periodic signals
09/13/1995EP0671737A2 Method and apparatus of reproducing digital data
09/13/1995EP0671032A1 Coding with modulation, error control, weighting, and bit allocation
09/12/1995US5450490 Apparatus and methods for including codes in audio signals and decoding
09/12/1995US5450449 Linear prediction coefficient generation during frame erasure or packet loss
09/06/1995EP0481107B1 A phonetic Hidden Markov Model speech synthesizer
09/05/1995US5448683 Speech encoder
09/05/1995US5448680 Voice communication processing system
09/05/1995US5448679 Method and system for speech data compression and regeneration
09/05/1995CA2025455C Speech coding system with generation of linear predictive coding parameters and control codes from a digital speech signal
08/1995
08/30/1995EP0669749A1 Noncompressed voice and data communication over modem for a computer-based multifunction personal communications system
08/30/1995EP0669742A2 Multimedia frame relay codec
08/29/1995CA1336841C Multi-pulse type coding system
08/24/1995WO1995022858A1 Process for the cascade coding and decoding of audio data
08/24/1995WO1995022857A1 Method and apparatus for controlling encoding rate in a communication system
08/24/1995WO1995022819A1 Vocoder asic
08/24/1995WO1995022818A1 Method and apparatus for group encoding signals
08/24/1995WO1995022817A1 Method and apparatus for mitigating audio degradation in a communication system
08/22/1995US5444816 Dynamic codebook for efficient speech coding based on algebraic codes
08/17/1995WO1995022233A1 Method of dynamically compensating for variable transmission delays in packet networks
08/10/1995WO1995021489A1 Data encoding method and apparatus, data decoding method and apparatus, data recording medium, and data transmission method
08/10/1995WO1995021443A1 Burst excited linear prediction
08/10/1995CA2181456A1 Burst excited linear prediction
08/09/1995EP0666698A1 Method and device for transmitting voice in a wireless system
08/09/1995EP0666558A2 Parametric speech coding
08/09/1995EP0666557A2 Decomposition in noise and periodic signal waveforms in waveform interpolation
08/09/1995EP0666540A1 Method and apparatus to record and playback digital data
08/09/1995EP0374941B1 Communication system capable of improving a speech quality by effectively calculating excitation multipulses
08/09/1995EP0287578B1 Digital coding process
08/08/1995CA1336622C Voice decoding device
08/02/1995EP0665661A2 Digital signal processing apparatus and method and dither signal generating apparatus
08/02/1995EP0665547A2 Encoding and decoding system
08/02/1995EP0665530A1 Voice activity detection driven noise remediator
07/1995
07/26/1995EP0664536A1 Speech code processing
07/25/1995CA1336457C Vector quantization in a harmonic speech coding arrangement
07/25/1995CA1336456C Harmonic speech coding arrangement
07/25/1995CA1336455C Code excited linear predictive vocoder using virtual searching
07/25/1995CA1336454C Vector adaptive predictive coder for speech and audio
07/20/1995WO1995019668A1 A method and system for audio information dissemination using various transmission modes
07/19/1995EP0663741A2 Adaptive digital audio encoding system
07/19/1995EP0663740A2 Apparatus for adaptively encoding input digital audio signals from a plurality of channels
07/19/1995EP0663739A1 Digital signal encoding device, its decoding device, and its recording medium
07/18/1995US5434948 Polyphonic coding
07/18/1995US5434947 Method for generating a spectral noise weighting filter for use in a speech coder
07/12/1995EP0662682A2 Speech signal coding
07/12/1995EP0662659A1 Method for minimizing the effect of memory errors within a digital information storage system
07/11/1995US5432884 Method and apparatus for decoding LPC-encoded speech using a median filter modification of LPC filter factors to compensate for transmission errors
07/11/1995US5432883 Voice coding apparatus with synthesized speech LPC code book
07/11/1995US5432526 Liquid crystal display having conductive cooling
07/11/1995CA2118543A1 Method for minimizing the effect of memory errors within a digital information storage system
07/06/1995WO1995018523A1 Method and apparatus for encoding multibit coded digital sound through subtracting adaptive dither, inserting buried channel bits and filtering, and encoding and decoding apparatus for use with this method
07/05/1995EP0661827A2 Subband filtering using inverse discrete cosine transform
07/05/1995EP0661826A2 Perceptual subband coding in which the signal-to-mask ratio is calculated from the subband signals
07/05/1995EP0661821A1 Encoding and decoding apparatus causing no deterioration of sound quality even when sinewave signal is encoded
07/05/1995EP0661819A2 Data compression
07/04/1995US5430241 Signal processing method and sound source data forming apparatus
06/1995
06/29/1995WO1995017746A1 Distributed voice recognition system
06/29/1995WO1995017745A1 System and method for performing voice compression
06/29/1995WO1995014289A3 Identification/authentication coding method and apparatus
06/29/1995CA2179194A1 System and method for performing voice compression
06/28/1995EP0660540A2 Decoder for decoding an encoded digital signal and a receiver comprising the decoder
06/28/1995EP0660301A1 Removal of swirl artifacts from celp based speech coders
06/28/1995EP0660299A1 Method and device for the transmission of dictations
06/21/1995EP0658878A2 System for transmitting a speech signal
06/21/1995EP0658877A2 Speech coding apparatus
06/21/1995EP0658876A2 Speech parameter encoder
06/21/1995EP0658875A2 Speech decoder
06/21/1995EP0658873A1 Robust vector quantization of line spectral frequencies
06/21/1995EP0608281B1 Process for reducing frequency crosstalk during acoustic or optical signal transmission and/or recording
06/21/1995CN1104010A Method for generating a spectral noise weighting filter for use in a speech coder
06/21/1995CA2136891A1 Removal of swirl artifacts from celp based speech coders
06/20/1995US5426718 Speech signal coding using correlation valves between subframes
06/20/1995CA2065731C Digital speech coder having optimized signal energy parameters
06/15/1995WO1995016333A1 Method and apparatus for compressing, method for transmitting, and method and apparatus for expanding compressed multi-channel sound signals, and recording medium for compressed multi-channel sound signals
1 ... 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 ... 320