| 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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| 07/30/1997 | EP0786760A2 Speech coding |
| 07/30/1997 | CN1155950A Data transmission system, data recording and reproducing apparatus and recording medium each having data structure of error correcting code |
| 07/30/1997 | CN1155801A Method and device for making pleasant noice in speech digital transmitting system |
| 07/30/1997 | CN1155725A Speech encoding method and apparatus |
| 07/29/1997 | US5652843 Voice signal coding system |
| 07/23/1997 | EP0785631A2 Perceptual noise shaping in the time domain via LPC prediction in the frequency domain |
| 07/23/1997 | EP0785541A2 Usage of voice activity detection for efficient coding of speech |
| 07/23/1997 | EP0785419A2 Voice activity detection |
| 07/23/1997 | EP0784846A1 A multi-pulse analysis speech processing system and method |
| 07/23/1997 | EP0555233B1 Greeting card with electronic sound recording |
| 07/22/1997 | US5651094 Acoustic category mean value calculating apparatus and adaptation apparatus |
| 07/22/1997 | US5651093 Method for compressing an audio signal to generate a compressed signal |
| 07/22/1997 | US5651092 Method and apparatus for speech encoding, speech decoding, and speech post processing |
| 07/22/1997 | US5651091 Method and apparatus for low-delay CELP speech coding and decoding |
| 07/22/1997 | US5651090 Coding method and coder for coding input signals of plural channels using vector quantization, and decoding method and decoder therefor |
| 07/22/1997 | US5651089 Method of determining a block size for a frame |
| 07/22/1997 | US5651026 Robust vector quantization of line spectral frequencies |
| 07/17/1997 | WO1997025708A1 Method and system for coding human speech for subsequent reproduction thereof |
| 07/17/1997 | WO1997021310A3 A method and device for encoding, transferring and decoding a non-pcm bitstream between a digital versatile disc device and a multi-channel reproduction apparatus |
| 07/17/1997 | WO1997016819A3 Method and arrangement for adding a new speech encoding method to an existing telecommunication system |
| 07/16/1997 | EP0784312A2 Encoding system and decoding system for audio signals |
| 07/16/1997 | CN1154606A Sound frequency decoding device |
| 07/15/1997 | US5649299 Apparatus and method for adapting a digital radiotelephone system to increased subscriber traffic |
| 07/15/1997 | US5649058 Speech synthesizing method achieved by the segmentation of the linear Formant transition region |
| 07/15/1997 | US5649054 Method and apparatus for coding digital sound by subtracting adaptive dither and inserting buried channel bits and an apparatus for decoding such encoding digital sound |
| 07/15/1997 | US5649053 Method for encoding audio signals |
| 07/15/1997 | US5649052 Adaptive digital audio encoding system |
| 07/15/1997 | US5649051 Constant data rate speech encoder for limited bandwidth path |
| 07/15/1997 | US5649029 MPEG audio/video decoder |
| 07/15/1997 | US5648989 For use in a communications device |
| 07/15/1997 | US5648955 In a time division multiple access communication system |
| 07/15/1997 | CA2098629C Speech recognition method using time-frequency masking mechanism |
| 07/09/1997 | EP0782800A2 Detection of defective speech frames in a receiver of a digital speech communication system |
| 07/09/1997 | CN1154173A A pitch post-filter |
| 07/09/1997 | CN1154013A Signal encoding method and apparatus |
| 07/08/1997 | US5646991 Noise replacement system and method in an echo canceller |
| 07/08/1997 | US5646961 Method for noise weighting filtering |
| 07/03/1997 | WO1997023866A1 Method and apparatus for processing digital data using fractal-excited linear predictive coding |
| 07/02/1997 | EP0782128A1 Method of analysing by linear prediction an audio frequency signal, and its application to a method of coding and decoding an audio frequency signal |
| 07/02/1997 | CN1153566A Multi-pulse analysis speech processing system and method |
| 07/02/1997 | CN1153369A Coding method and apparatus for using multi channel audio signals |
| 07/01/1997 | US5644679 Method and device for preprocessing an acoustic signal upstream of a speech coder |
| 06/26/1997 | DE19641619C1 Frame synthesis for speech signal in code excited linear predictor |
| 06/25/1997 | EP0781012A2 Arithmetic unit |
| 06/25/1997 | EP0780832A2 Speech coding device for estimating an error of power envelopes of synthetic and input speech signals |
| 06/25/1997 | EP0780831A2 Coding of a speech or music signal with quantization of harmonics components specifically and then residue components |
| 06/25/1997 | CN1152843A Image/audio coding and decoding device |
| 06/25/1997 | CN1152776A Method and arrangement for phoneme signal duplicating, decoding and synthesizing |
| 06/24/1997 | US5642465 Linear prediction speech coding method using spectral energy for quantization mode selection |
| 06/24/1997 | US5642464 Methods and apparatus for noise conditioning in digital speech compression systems using linear predictive coding |
| 06/24/1997 | US5642383 Audio data coding method and audio data coding apparatus |
| 06/24/1997 | US5642368 Error protection for multimode speech coders |
| 06/19/1997 | WO1997022201A2 Method and system for transmitting real-time video |
| 06/18/1997 | EP0779732A2 Multi-point voice conferencing system over a wide area network |
| 06/18/1997 | CN1152216A Digital data encoding apparatus and method thereof |
| 06/18/1997 | CN1152164A Code excitation linear predictive coding device |
| 06/17/1997 | US5640486 Encoding, decoding and compression of audio-type data using reference coefficients located within a band a coefficients |
| 06/17/1997 | US5640458 Audio signal reproducing apparatus |
| 06/12/1997 | WO1997021310A2 A method and device for encoding, transferring and decoding a non-pcm bitstream between a digital versatile disc device and a multi-channel reproduction apparatus |
| 06/12/1997 | WO1997021293A1 Post-compression hidden data transport |
| 06/12/1997 | WO1997021211A1 Multi-channel predictive subband coder using psychoacoustic adaptive bit allocation |
| 06/11/1997 | EP0778561A2 Speech coding device |
| 06/11/1997 | CN1151638A Method for allocating optimum amount of bits to MPEG audio data at high speed |
| 06/03/1997 | US5636322 Vector quantizer |
| 06/03/1997 | US5636292 Steganography methods employing embedded calibration data |
| 06/03/1997 | US5636231 Method and apparatus for minimal redundancy error detection and correction of voice spectrum parameters |
| 05/29/1997 | WO1997019444A1 Method and device for resynthesizing a speech signal |
| 05/28/1997 | EP0776134A2 Error recovery of audio data carried in a packetized data stream |
| 05/28/1997 | EP0776098A2 Subband coding/decoding |
| 05/28/1997 | EP0776097A2 Mobile data terminals with text-to-speech capability |
| 05/28/1997 | EP0775389A2 Encoding system and encoding method for encoding a digital signal having at least a first and a second digital signal component |
| 05/28/1997 | EP0775360A1 Signal-processing method and device for substituting non-correctable blocks in a receiver for block-coded audio signals |
| 05/28/1997 | CN1150853A Method and apparatus for low rate coding and decoding |
| 05/27/1997 | US5634085 Signal reproducing device for reproducting voice signals with storage of initial valves for pattern generation |
| 05/27/1997 | US5633984 For processing vocal information |
| 05/27/1997 | US5633982 Removal of swirl artifacts from celp-based speech coders |
| 05/27/1997 | US5633981 Method and apparatus for adjusting dynamic range and gain in an encoder/decoder for multidimensional sound fields |
| 05/27/1997 | US5633980 Voice cover and a method for searching codebooks |
| 05/27/1997 | US5633880 Receiver providing masking of an error in a digital signal, and a transmission system including such a receiver |
| 05/27/1997 | US5633873 Combined fixed and mobile radio communication system and method |
| 05/27/1997 | US5633633 For digitizing an analog signal |
| 05/22/1997 | DE19647298A1 Digital speech coder excitation data determining method |
| 05/21/1997 | EP0774750A2 Determination of line spectrum frequencies for use in a radiotelephone |
| 05/20/1997 | US5632001 Mobile communication apparatus having recording/reproducing function |
| 05/20/1997 | US5631651 Telecom adapter for interfacing computing devices to the analog telephone network |
| 05/14/1997 | EP0773634A2 Audio subband coding method |
| 05/14/1997 | EP0773630A1 Sound decoding device |
| 05/14/1997 | EP0773533A1 Method of synthesizing a block of a speech signal in a CELP-type coder |
| 05/14/1997 | EP0772764A1 Process and device for determining the tonality of an audio signal |
| 05/14/1997 | EP0537361B1 High efficiency digital data encoding and decoding apparatus |
| 05/14/1997 | EP0462559B1 Speech coding and decoding system |
| 05/13/1997 | US5630016 Comfort noise generation for digital communication systems |
| 05/13/1997 | US5630014 Gain controller with automatic adjustment using integration energy values |
| 05/13/1997 | US5630012 Speech efficient coding method |
| 05/13/1997 | US5630011 Quantization of harmonic amplitudes representing speech |
| 05/09/1997 | WO1997016821A1 Method and system for compressing a speech signal using nonlinear prediction |
| 05/09/1997 | WO1997016820A1 Method and system for compressing a speech signal using envelope modulation |
| 05/09/1997 | WO1997016819A2 Method and arrangement for adding a new speech encoding method to an existing telecommunication system |
| 05/09/1997 | WO1997016818A1 Method and system for compressing a speech signal using waveform approximation |
| 05/07/1997 | EP0772186A2 Speech encoding method and apparatus |