| 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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| 09/22/1999 | EP0708959B1 A fixed bit rate speech encoder/decoder |
| 09/22/1999 | CN1229502A Method and apparatus for searching excitation codebook in code excited linear prediction (CELP) coder |
| 09/22/1999 | CN1229501A Method and device for coding audio signal by 'forward' and 'backward' LPC analysis |
| 09/22/1999 | CN1229500A Storage medium having electronic circuits, and voice synthesizer having the storage medium |
| 09/21/1999 | US5956686 Audio signal coding/decoding method |
| 09/21/1999 | US5956683 Distributed voice recognition system |
| 09/21/1999 | US5956681 Apparatus for generating text data on the basis of speech data input from terminal |
| 09/21/1999 | US5956674 Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels |
| 09/21/1999 | US5956673 Detection and bypass of tandem vocoding using detection codes |
| 09/21/1999 | US5956672 Wide-band speech spectral quantizer |
| 09/21/1999 | US5956670 Speech reproducing device capable of reproducing long-time speech with reduced memory |
| 09/21/1999 | US5956666 Signal interpolation and decimation exploiting filter symmetry |
| 09/21/1999 | US5954834 Systems and methods for communicating desired audio information over a communications medium |
| 09/21/1999 | CA2158270C Method and apparatus for reducing self interference in a communication system |
| 09/16/1999 | WO1999046938A1 Method of embedding compressed digital audio signals in a video signal using guard bands |
| 09/16/1999 | WO1999046914A2 Communication device and method of operation |
| 09/16/1999 | WO1999046764A2 Speech coding |
| 09/16/1999 | WO1999004498A3 Method and apparatus for encoding and decoding multiple audio channels at low bit rates |
| 09/15/1999 | EP0942411A2 Audio signal coding and decoding apparatus |
| 09/15/1999 | EP0942408A2 Pitch marks management for speech synthesis |
| 09/15/1999 | EP0658876B1 Speech parameter encoder |
| 09/15/1999 | CN1228867A Method and apparatus for improving voice quality of tandemed vocoders |
| 09/14/1999 | US5953698 Speech signal transmission with enhanced background noise sound quality |
| 09/14/1999 | US5953697 Gain estimation scheme for LPC vocoders with a shape index based on signal envelopes |
| 09/14/1999 | US5953695 Method and apparatus for synchronizing digital speech communications |
| 09/14/1999 | US5951646 System and method for scheduling and processing image and sound data |
| 09/10/1999 | WO1999045532A1 Speech coding including soft adaptability feature |
| 09/08/1999 | EP0940799A1 Formant shift-compensated sound synthesizer and method of operation thereof |
| 09/08/1999 | EP0607989B1 Voice coder system |
| 09/08/1999 | CN1228236A Encoding method and device, decoding method and device, and recording medium |
| 09/07/1999 | US5950156 High efficient signal coding method and apparatus therefor |
| 09/07/1999 | US5950155 Apparatus and method for speech encoding based on short-term prediction valves |
| 09/07/1999 | US5950151 Methods for implementing non-uniform filters |
| 09/07/1999 | US5949888 Comfort noise generator for echo cancelers |
| 09/02/1999 | WO1999044291A1 Coding device and coding method, decoding device and decoding method, program recording medium, and data recording medium |
| 09/02/1999 | WO1999044288A1 Analog-to-digital converter circuit |
| 09/02/1999 | WO1999044192A1 Apparatus and method for hybrid excited linear prediction speech encoding |
| 09/02/1999 | CA2317435A1 Apparatus and method for hybrid excited linear prediction speech encoding |
| 09/01/1999 | EP0939394A1 Apparatus for encoding and apparatus for decoding speech and musical signals |
| 09/01/1999 | EP0938781A2 Transmission system with improved reconstruction of missing parts |
| 09/01/1999 | EP0938709A1 System and method for scheduling and processing image and sound data |
| 08/31/1999 | US5946651 Speech synthesizer employing post-processing for enhancing the quality of the synthesized speech |
| 08/31/1999 | US5946038 Method and arrangement for coding and decoding signals |
| 08/31/1999 | US5945932 Technique for embedding a code in an audio signal and for detecting the embedded code |
| 08/26/1999 | WO1999043136A1 Cellular phone with expansion memory for audio and video storage |
| 08/26/1999 | WO1999043087A2 Apparatus and method for the clocking of digital and analog circuits on a common substrate to reduce noise |
| 08/26/1999 | WO1999042932A2 Computer-based patient record and message delivery system |
| 08/26/1999 | DE19806927A1 Method of communicating natural speech |
| 08/25/1999 | EP0846375B1 Process and device for the scalable coding of audio signals |
| 08/25/1999 | EP0649558B1 Transmission system comprising at least a coder |
| 08/25/1999 | EP0649557B1 Transmission system comprising at least a coder |
| 08/24/1999 | US5943646 Signal transmission system in which level numbers representing quantization levels of analysis coefficients are interpolated |
| 08/24/1999 | US5943644 Speech compression coding with discrete cosine transformation of stochastic elements |
| 08/19/1999 | WO1999041737A1 Method and apparatus for high speed determination of an optimum vector in a fixed codebook |
| 08/19/1999 | WO1999041736A2 A system and method for providing split vector quantization data coding |
| 08/18/1999 | EP0936597A1 Storage medium having electronic circuits, and voice synthesizer having the storage medium |
| 08/18/1999 | EP0935866A1 Method and apparatus for decoding variable rate data |
| 08/18/1999 | CN1226039A Exponential calculation device and decoding device |
| 08/17/1999 | US5940791 Method and apparatus for speech analysis and synthesis using lattice ladder notch filters |
| 08/17/1999 | US5940429 Cross-term compensation power adjustment of embedded auxiliary data in a primary data signal |
| 08/12/1999 | WO1999040573A1 Method for decoding an audio signal with transmission error correction |
| 08/12/1999 | WO1999040569A2 A decoding method, speech coding processing unit and a network element |
| 08/12/1999 | WO1999040568A1 Method for voice data transmission |
| 08/12/1999 | WO1999028912A3 A method and device for interfacing variable-rate sampled digital audio information to a string of uniform-sized blocks, and a unitary medium so produced by a write-interfacing |
| 08/11/1999 | EP0935379A2 Method for the automatic conversion of text messages or the like into speech |
| 08/11/1999 | EP0935203A2 Exponential calculation device |
| 08/11/1999 | EP0880772A4 Speech coding, reconstruction and recognition using acoustics and electromagnetic waves |
| 08/11/1999 | EP0857375B1 Method of and apparatus for coding, manipulating and decoding audio signals |
| 08/11/1999 | CN1225739A Cryptographic method, apparatus and systems for storage media electronic rights management in closed and connected appliances |
| 08/11/1999 | CN1225738A Device for determining quality of output signal to be generated by a signal processing circuit, and method therefor |
| 08/10/1999 | US5937378 Wideband speech coder and decoder that band divides an input speech signal and performs analysis on the band-divided speech signal |
| 08/10/1999 | US5937376 Method of coding an excitation pulse parameter sequence |
| 08/10/1999 | US5937374 System and method for improved pitch estimation which performs first formant energy removal for a frame using coefficients from a prior frame |
| 08/10/1999 | US5937000 Method and apparatus for embedding auxiliary data in a primary data signal |
| 08/10/1999 | CA2157024C Method and apparatus for group encoding signals |
| 08/05/1999 | DE19803760A1 Speech transmission method for telecommunication system |
| 08/04/1999 | EP0933968A1 Transfer scheme for speech and voice band signals and ISDN digital signals using reduced transmission bandwidth over ATM |
| 08/04/1999 | EP0933945A2 Digital signal processing |
| 08/04/1999 | EP0933943A2 Digital signal processing |
| 08/04/1999 | EP0933889A1 Digital sound signal transmitting apparatus and receiving apparatus |
| 08/04/1999 | EP0933757A2 Phase detection for an audio signal |
| 08/04/1999 | EP0933000A1 Method and transcoder for performing a distributed handover in the uplink direction |
| 08/04/1999 | EP0634043B1 A method of transmitting and receiving coded speech |
| 08/03/1999 | US5933805 Method of communicating speech signals |
| 08/03/1999 | US5933803 Speech encoding at variable bit rate |
| 08/03/1999 | US5933802 Speech reproducing system with efficient speech-rate converter |
| 08/03/1999 | CA2145571C Recovering analog and digital signals from superimposed analog and digital signals using linear prediction |
| 07/29/1999 | WO1999038157A1 Method and device for coding lag parameter and code book preparing method |
| 07/29/1999 | WO1999038156A1 Method and device for emphasizing pitch |
| 07/29/1999 | WO1999038155A1 A decoding method and system comprising an adaptive postfilter |
| 07/29/1999 | WO1999038144A1 Watermark applied to one-dimensional data |
| 07/29/1999 | WO1999029114B1 Electronic watermarking in the compressed domain utilizing perceptual coding |
| 07/29/1999 | WO1999022451A3 Methods and devices for encoding audio signals and methods and devices for decoding a bit stream |
| 07/29/1999 | WO1999004387A3 Apparatus and method for simplified analog signal record and playback |
| 07/29/1999 | CA2318552A1 Audio recorder with retroactive storage |
| 07/29/1999 | CA2283203A1 Method and device for coding lag parameter and code book preparing method |
| 07/29/1999 | CA2283202A1 Method and apparatus for enhancing pitch |
| 07/28/1999 | EP0932141A2 Method for signal controlled switching between different audio coding schemes |
| 07/28/1999 | EP0931431A1 Method for transmitting multiresolution audio signals in a radio frequency communication system |
| 07/28/1999 | EP0931386A1 Method for signalling a noise substitution during audio signal coding |