| 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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| 04/28/1998 | US5745648 Apparatus and method for analyzing speech signals to determine parameters expressive of characteristics of the speech signals |
| 04/28/1998 | US5745604 Identification/authentication system using robust, distributed coding |
| 04/28/1998 | CA2132006C Method for generating a spectral noise weighting filter for use in a speech coder |
| 04/28/1998 | CA2115185C Device for encoding speech spectrum parameters with a smallest possible number of bits |
| 04/28/1998 | CA2016042C System for coding wide-bank audio signals |
| 04/22/1998 | EP0837453A2 Speech analysis method and speech encoding method and apparatus |
| 04/22/1998 | EP0673576A4 Apparatus for and method of speech digitizing. |
| 04/22/1998 | CN1179870A Method and device for encoding, transferring and decoding non-PCM bitstream between digital versatile disc device and multi-channel reproduction apparatus |
| 04/22/1998 | CN1179848A Method and apparatus in coding digital information |
| 04/22/1998 | CN1179605A Recording and/or reproducing apparatus and recording apparatus |
| 04/21/1998 | US5742930 System and method for performing voice compression |
| 04/21/1998 | US5742735 Digital adaptive transformation coding method |
| 04/21/1998 | US5742734 Encoding rate selection in a variable rate vocoder |
| 04/21/1998 | US5742733 Parametric speech coding |
| 04/21/1998 | US5742679 Optimized simultaneous audio and data transmission using QADM with phase randomization |
| 04/16/1998 | WO1998016081A1 Method for transmitting multiresolution audio signals in a radio frequency communication system |
| 04/16/1998 | WO1998016014A1 Data compression and expansion of an audio signal |
| 04/16/1998 | WO1998015946A1 Systems and methods for communicating desired audio information over a communications medium |
| 04/16/1998 | WO1998015945A1 Variable length audio coding using a plurality of subband bit allocation patterns |
| 04/16/1998 | CA2267764A1 Variable length audio coding using a plurality of subband bit allocation patterns |
| 04/16/1998 | CA2267595A1 Systems and methods for communicating desired audio information over a communications medium |
| 04/15/1998 | EP0836176A2 Process for the synthesis of a frame of a speech signal |
| 04/15/1998 | CN1179225A Method and apparatus for detection and bypass of tandem vocoding |
| 04/15/1998 | CN1179040A Device and method for producing noise in digital receiver |
| 04/15/1998 | CN1038089C Appratus for coding or decoding signals and method for coding or decoding |
| 04/09/1998 | WO1998015152A1 Method and transcoder for performing a distributed handover in the uplink direction |
| 04/09/1998 | CA2267270A1 Method and transcoder for performing a distributed handover in the uplink direction |
| 04/08/1998 | EP0834863A2 Speech coder at low bit rates |
| 04/08/1998 | EP0834858A2 Inter-pattern distance calculation method and apparatus thereof, and pattern recognition method and apparatus thereof |
| 04/08/1998 | EP0834221A1 Apparatus and method for lossless waveform data compression |
| 04/08/1998 | EP0834112A1 Dictation and transcription apparatus |
| 04/07/1998 | US5737721 Predictive technique for signal to mask ratio calculations |
| 04/07/1998 | US5737718 Method, apparatus and recording medium for a coder with a spectral-shape-adaptive subband configuration |
| 04/07/1998 | US5737716 Method and apparatus for encoding speech using neural network technology for speech classification |
| 04/07/1998 | US5737695 Method and apparatus for controlling the use of discontinuous transmission in a cellular telephone |
| 04/07/1998 | US5737484 Multistage low bit-rate CELP speech coder with switching code books depending on degree of pitch periodicity |
| 04/07/1998 | US5737367 Transmission system with simplified source coding |
| 04/07/1998 | US5736943 Method for determining the type of coding to be selected for coding at least two signals |
| 04/02/1998 | WO1998013965A1 Error concealment in digital audio receiver |
| 04/02/1998 | WO1998013941A1 Method and apparatus for detecting bad data packets received by a mobile telephone using decoded speech parameters |
| 04/02/1998 | WO1997043761A3 Cryptographic methods, apparatus and systems for storage media electronic rights management in closed and connected appliances |
| 04/02/1998 | CA2267079A1 Error concealment in digital audio receiver |
| 04/02/1998 | CA2265640A1 Method and apparatus for detecting bad data packets received by a mobile telephone using decoded speech parameters |
| 04/01/1998 | EP0833305A2 Low bit-rate pitch lag coder |
| 04/01/1998 | EP0832521A1 Process for encoding an audio signal digitalised at a low sampling frequency |
| 04/01/1998 | EP0832482A1 Speech coder |
| 04/01/1998 | EP0832470A2 Mpeg audio decoder |
| 03/31/1998 | US5734967 Method and apparatus for reducing self interference in a communication system |
| 03/31/1998 | US5734791 Rapid tree-based method for vector quantization |
| 03/31/1998 | US5734790 Low bit rate speech signal transmitting system using an analyzer and synthesizer with calculation reduction |
| 03/31/1998 | US5734789 Voiced, unvoiced or noise modes in a CELP vocoder |
| 03/31/1998 | US5734679 Voice signal transmission system using spectral parameter and voice parameter encoding apparatus and decoding apparatus used for the voice signal transmission system |
| 03/31/1998 | US5734657 Encoding and decoding system using masking characteristics of channels for bit allocation |
| 03/26/1998 | WO1998012825A2 Method for storing information on a chip card and device, especially a car radio, for implementing said method |
| 03/25/1998 | EP0831596A2 Method and circuit arrangement for coding or decoding audio signals |
| 03/25/1998 | EP0831457A2 Vector quantization method and speech encoding method and apparatus |
| 03/25/1998 | EP0830652A2 Reduced complexity signal transmission system |
| 03/24/1998 | US5732390 Speech signal transmitting and receiving apparatus with noise sensitive volume control |
| 03/24/1998 | US5732389 Voiced/unvoiced classification of speech for excitation codebook selection in celp speech decoding during frame erasures |
| 03/24/1998 | US5732188 Method for the modification of LPC coefficients of acoustic signals |
| 03/24/1998 | US5731767 Information encoding method and apparatus, information decoding method and apparatus, information recording medium, and information transmission method |
| 03/19/1998 | WO1998011536A1 Method and arrangement in a telecommunication system |
| 03/19/1998 | DE19741195A1 Recording and playback appts. with microphone |
| 03/18/1998 | EP0829875A1 Method and device for encoding audio signal and method and device for decoding audio signal |
| 03/18/1998 | EP0516621B1 Dynamic codebook for efficient speech coding based on algebraic codes |
| 03/18/1998 | CN1176718A Voice compression in a paging network system |
| 03/18/1998 | CN1176703A Processing speech coding parameters in a telecommunication system |
| 03/18/1998 | CN1176702A A communication system and method using a speaker dependent time scaling technique |
| 03/17/1998 | US5729694 Speech coding, reconstruction and recognition using acoustics and electromagnetic waves |
| 03/17/1998 | US5729658 Evaluating intelligibility of speech reproduction and transmission across multiple listening conditions |
| 03/17/1998 | US5729655 Method and apparatus for speech compression using multi-mode code excited linear predictive coding |
| 03/17/1998 | US5729654 Vector encoding method, in particular for voice signals |
| 03/10/1998 | US5727125 Method and apparatus for synthesis of speech excitation waveforms |
| 03/10/1998 | US5727124 Method of and apparatus for signal recognition that compensates for mismatching |
| 03/10/1998 | US5727123 Block normalization processor |
| 03/10/1998 | US5727122 Code excitation linear predictive (CELP) encoder and decoder and code excitation linear predictive coding method |
| 03/10/1998 | US5727119 Method and apparatus for efficient implementation of single-sideband filter banks providing accurate measures of spectral magnitude and phase |
| 03/10/1998 | US5727085 Waveform data compression apparatus |
| 03/10/1998 | US5727075 Multipoint communication apparatus with reduced number of audio decoders |
| 03/10/1998 | US5727023 Apparatus for and method of speech digitizing |
| 03/04/1998 | EP0698268A4 Method and apparatus for mitigating audio degradation in a communication system |
| 03/04/1998 | CN1175054A Digital signal processor |
| 03/03/1998 | US5724654 Housing for pager receiver having battery cover locking piece which exposes terminal for external access |
| 03/03/1998 | US5724546 Information providing and collecting apparatus with associated primary and secondary recording mediums |
| 03/03/1998 | US5724482 Smart tray for audio player |
| 03/03/1998 | US5724480 Speech coding apparatus, speech decoding apparatus, speech coding and decoding method and a phase amplitude characteristic extracting apparatus for carrying out the method |
| 02/25/1998 | EP0825744A2 QADM with phase randomisation |
| 02/25/1998 | EP0825725A1 Subband coding with adaptive bit allocation |
| 02/25/1998 | EP0825588A2 Wide-band speech spectral quantizer |
| 02/25/1998 | EP0824821A2 Steganography systems |
| 02/25/1998 | EP0824750A1 A gain quantization method in analysis-by-synthesis linear predictive speech coding |
| 02/25/1998 | CN1174457A Speech signal transmission method, and speech coding and decoding system |
| 02/24/1998 | US5721806 Method for allocating optimum amount of bits to MPEG audio data at high speed |
| 02/18/1998 | CN1173940A Speech coding method using synthesis analysis |
| 02/18/1998 | CN1173939A Speech coding method using synthesis analysis |
| 02/18/1998 | CN1173938A Speech coding method using synthesis analysis |
| 02/18/1998 | CN1173690A Method and apparatus fro judging voiced/unvoiced sound and method for encoding the speech |
| 02/17/1998 | US5719998 Partitioned decompression of audio data using audio decoder engine for computationally intensive processing |
| 02/17/1998 | US5719994 Determination of an excitation vector in CELP encoder |
| 02/17/1998 | US5719993 Long term predictor |