| 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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| 08/25/1992 | US5142582 Speech coding and decoding system with background sound reproducing function |
| 08/25/1992 | US5142581 Multi-stage linear predictive analysis circuit |
| 08/20/1992 | WO1991006943A3 Digital speech coder having optimized signal energy parameters |
| 08/18/1992 | US5140639 Speech generation using variable frequency oscillators |
| 08/18/1992 | US5140638 Speech coding system and a method of encoding speech |
| 08/13/1992 | DE4203436A1 Data reduced speech communication based on non-harmonic constituents - involves analogue=digital converter receiving band limited input signal with digital signal divided into twenty one band passes at specific time |
| 08/12/1992 | EP0498577A2 IC card with built-in voice synthesizing function |
| 08/11/1992 | US5138662 Speech coding apparatus |
| 08/11/1992 | US5138661 Linear predictive codeword excited speech synthesizer |
| 08/06/1992 | WO1992013396A1 Process for transmitting digitised, block-coded audio signals using scale factors |
| 08/06/1992 | DE4103277A1 Encoding of place or time-dependent analogue functions - assembling successive samples with symbolic significance into quasi-words for stepwise abstraction in hierarchical associative memory |
| 08/05/1992 | EP0497413A1 Subband coding system and a transmitter comprising the coding system |
| 08/05/1992 | EP0496829A1 Lpc based speech synthesis with adaptive pitch prefilter |
| 08/04/1992 | US5136652 Amplitude enhanced sampled clipped speech encoder and decoder |
| 07/29/1992 | EP0495832A1 Sound synthesizer |
| 07/28/1992 | CA1305796C Method and apparatus for multi-pulse speech coding |
| 07/23/1992 | WO1992012607A1 Encoder/decoder for multidimensional sound fields |
| 07/21/1992 | US5133010 Method and apparatus for synthesizing speech without voicing or pitch information |
| 07/09/1992 | WO1992011627A2 Speech coding |
| 07/01/1992 | EP0492459A2 System for embedded coding of speech signals |
| 06/30/1992 | US5127053 Low-complexity method for improving the performance of autocorrelation-based pitch detectors |
| 06/25/1992 | WO1992010830A1 Methods for speech quantization and error correction |
| 06/23/1992 | US5125030 Speech signal coding/decoding system based on the type of speech signal |
| 06/23/1992 | US5124701 Quantization device with variable digital coding rate |
| 06/17/1992 | EP0490758A2 Method and apparatus for detecting change of speech signal characteristics for low bitrate vocoders |
| 06/15/1992 | CA2057485A1 Method and device for the detection of changes in the characteristics of the speech signal and application of said method and device to low bit-rate vocoders |
| 06/03/1992 | EP0488803A2 Signal encoding device |
| 06/03/1992 | EP0488751A2 Signal reproducing device for reproducing voice signals |
| 06/02/1992 | US5119424 Speech coding system using excitation pulse train |
| 06/02/1992 | US5119423 Signal processor for analyzing distortion of speech signals |
| 06/02/1992 | US5119092 Apparatus for encoding, decoding, and storing waveforms |
| 05/29/1992 | WO1992009071A1 Vehicular voice storage, playback, and broadcasting device |
| 05/26/1992 | US5117228 System for coding and decoding an orthogonally transformed audio signal |
| 05/20/1992 | EP0485935A1 Signal processing circuit for the european digital cellular radio-telephone system |
| 05/19/1992 | US5115469 Speech encoding/decoding apparatus having selected encoders |
| 05/19/1992 | CA1301337C Adaptive method and apparatus for coding speech |
| 05/19/1992 | CA1301072C Speech coding transmission equipment |
| 05/13/1992 | EP0484339A1 Digital speech coder with vector excitation source having improved speech quality |
| 05/13/1992 | EP0232456B1 Digital speech processor using arbitrary excitation coding |
| 05/12/1992 | US5113448 Speech coding/decoding system with reduced quantization noise |
| 05/12/1992 | CA1300751C Speech coding system and method |
| 05/06/1992 | EP0483882A2 Speech parameter encoding method capable of transmitting a spectrum parameter with a reduced number of bits |
| 05/06/1992 | EP0470975A4 Methods and apparatus for reconstructing non-quantized adaptively transformed voice signals |
| 05/06/1992 | EP0416036A4 Improved adaptive transform coding |
| 04/29/1992 | EP0482699A2 Method for coding and decoding a sampled analog signal having a repetitive nature and a device for coding and decoding by said method |
| 04/28/1992 | US5109417 Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio |
| 04/22/1992 | EP0481895A2 Method and apparatus for low bit rate transmission of a speech signal using CELP coding |
| 04/22/1992 | EP0481374A2 Dynamic bit allocation subband excited transform coding method and apparatus |
| 04/22/1992 | EP0481107A1 A phonetic Hidden Markov Model speech synthesizer |
| 04/16/1992 | WO1992006470A1 A method of, and system for, coding analogue signals |
| 04/15/1992 | EP0188283B1 Recording/reproducing apparatus including synthesized voice converter |
| 04/15/1992 | CN1060378A Method of and system for coding analogue signals |
| 04/14/1992 | US5105464 Means for improving the speech quality in multi-pulse excited linear predictive coding |
| 04/14/1992 | US5105463 System for subband coding of a digital audio signal and coder and decoder constituting the same |
| 04/02/1992 | WO1992005539A1 Methods for speech analysis and synthesis |
| 04/01/1992 | EP0477960A2 Linear prediction speech coding with high-frequency preemphasis |
| 04/01/1992 | EP0371035A4 Method for error correction in digitally encoded speech |
| 03/31/1992 | US5101433 Analogue waveform |
| 03/25/1992 | EP0476614A2 Speech coding and decoding system |
| 03/18/1992 | EP0475520A2 Method for coding an analog signal having a repetitive nature and a device for coding by said method |
| 03/18/1992 | EP0475196A2 Method for processing audio signals in a sub-band coding system |
| 03/17/1992 | US5097508 Digital speech coder having improved long term lag parameter determination |
| 03/17/1992 | US5097507 Fading bit error protection for digital cellular multi-pulse speech coder |
| 03/15/1992 | WO1992005541A1 Voice coding system |
| 03/11/1992 | EP0473611A1 Adaptive transform coder having long term predictor |
| 03/05/1992 | WO1992004673A1 Improved memory system |
| 03/05/1992 | CA2090862A1 Memory system |
| 03/04/1992 | EP0473367A1 Digital signal encoders |
| 03/04/1992 | EP0259950B1 Digital speech sinusoidal vocoder with transmission of only a subset of harmonics |
| 03/03/1992 | US5093863 Fast pitch tracking process for LTP-based speech coders |
| 02/26/1992 | EP0472283A2 An assembly and method for binary tree-searched vector quantisation data compression processing |
| 02/25/1992 | US5091955 Voice coding/decoding system having selected coders and entropy coders |
| 02/25/1992 | US5091949 Method and apparatus for the recognition of voice signal encoded as time encoded speech |
| 02/25/1992 | US5091946 Communication system capable of improving a speech quality by effectively calculating excitation multipulses |
| 02/25/1992 | US5091945 Source dependent channel coding with error protection |
| 02/25/1992 | US5091944 Apparatus for linear predictive coding and decoding of speech using residual wave form time-access compression |
| 02/20/1992 | WO1992002927A1 A method of coding a sampled speech signal vector |
| 02/19/1992 | EP0470975A1 Methods and apparatus for reconstructing non-quantized adaptively transformed voice signals. |
| 02/18/1992 | US5089818 Method of transmitting or storing sound signals in digital form through predictive and adaptive coding and installation therefore |
| 02/18/1992 | US5088379 Electronic melody generating system having memory separated from melody generating unit |
| 02/12/1992 | EP0470941A1 A method of coding a sampled speech signal vector |
| 02/12/1992 | EP0470110A1 Signal-processing system for digital signals. |
| 02/11/1992 | CA2047941A1 Assembly and method for binary tree-searched vector quantisation data compression processing |
| 02/05/1992 | EP0469997A1 Coding method and speech coder using linear prediction analysis |
| 02/04/1992 | US5086471 Gain-shape vector quantization apparatus |
| 02/04/1992 | CA1295421C Amplitude enhanced sampled clipped speech encoder and decoder |
| 01/14/1992 | US5081681 Method and apparatus for phase synthesis for speech processing |
| 01/08/1992 | EP0465057A1 Low-delay code-excited linear predictive coding of wideband speech at 32kbits/sec |
| 01/08/1992 | EP0465054A1 Communications processor |
| 01/02/1992 | EP0463473A2 Fast calculation apparatus for carrying out a forward and an inverse transform |
| 12/31/1991 | US5077798 Method and system for voice coding based on vector quantization |
| 12/27/1991 | EP0462559A2 Speech coding and decoding system |
| 12/27/1991 | EP0462558A2 Speech coding system |
| 12/24/1991 | CA1293569C Method of and device for speech signal coding and decoding by subbband analysis and vector quantization with dynamic bit allocation |
| 12/17/1991 | US5073940 Method for protecting multi-pulse coders from fading and random pattern bit errors |
| 12/04/1991 | EP0459363A1 Voice signal coding system |
| 12/04/1991 | EP0459358A2 Speech decoder |
| 12/04/1991 | EP0459215A1 Voice/noise splitting apparatus |
| 12/03/1991 | CA1292805C Method of and device for speech signal coding and decoding by parameter extraction and vector quantization techniques |
| 11/27/1991 | EP0458645A2 Subband digital signal encoding apparatus |