| 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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| 02/19/2002 | CA2233146C Audio encoding apparatus and audio decoding apparatus |
| 02/14/2002 | WO2002013183A1 Voice data processing device and processing method |
| 02/14/2002 | WO2002013182A1 Digital signal processing method, learning method, apparatuses for them, and program storage medium |
| 02/14/2002 | WO2002013181A1 Digital signal processing method, learning method, apparatuses for them, and program storage medium |
| 02/14/2002 | WO2002013180A1 Digital signal processing method, learning method, apparatuses for them, and program storage medium |
| 02/14/2002 | WO2001065888A3 A system for accommodating primary and secondary audio signal |
| 02/14/2002 | WO2001043320A3 Method for decoding digital audio data |
| 02/14/2002 | WO2000063882A9 Method and apparatus for performing packet loss or frame erasure concealment |
| 02/14/2002 | US20020019960 Device for improving voice signal in quality |
| 02/14/2002 | US20020019906 Signal processing circuit |
| 02/14/2002 | US20020019823 Selective processing of data embedded in a multimedia file |
| 02/14/2002 | US20020019734 Recording apparatus for recording speech information for a subsequent off-line speech recognition |
| 02/14/2002 | US20020018579 Printing media and methods employing digital watermarking |
| 02/14/2002 | US20020018572 Methods for detecting alteration of audio |
| 02/14/2002 | US20020018490 Encoding and decoding of a digital signal |
| 02/14/2002 | DE10029893A1 Signal receiver for data communication system, evaluates watermark embedded in received signal to control signal transmission and other processes |
| 02/13/2002 | EP1179820A2 Method of coding LSP coefficients during speech inactivity |
| 02/13/2002 | EP1179819A1 Efficient comfort noise transmission |
| 02/13/2002 | EP1179787A1 Fast calculation apparatus for carrying out a forward and an inverse transform |
| 02/13/2002 | EP0858653B1 Method and arrangement for adding a new speech encoding method to an existing telecommunication system |
| 02/13/2002 | CN1336065A Communication device for integrating voice mail services and TV functions |
| 02/13/2002 | CN1335979A Transmission system with improved encoder and decoder |
| 02/13/2002 | CN1335718A Digital video frequency recording equipment |
| 02/13/2002 | CN1079180C Voice compression method and equipment in communication system |
| 02/07/2002 | WO2002011351A2 Flexible variable rate vocoder for wireless communication systems |
| 02/07/2002 | WO2002011326A2 Stegotext encoder and decoder |
| 02/07/2002 | WO2002011144A2 Power generating device |
| 02/07/2002 | WO2002011125A1 Attenuation of background noise and echoes in audio signal |
| 02/07/2002 | WO2002011124A1 Method of speech compression without quality deterioration |
| 02/07/2002 | WO2001078071A3 Hand-held optical disc player/recorder |
| 02/07/2002 | US20020016816 Linking of computers based on steganographically embedded digital data |
| 02/07/2002 | US20020016714 Optical recording medium having losslessly encoded data |
| 02/07/2002 | US20020016711 Encoding of periodic speech using prototype waveforms |
| 02/07/2002 | US20020016644 Recording apparatus, reproducing apparatus, and recording and/or reproducing apparatus |
| 02/07/2002 | US20020016161 Method and apparatus for compression of speech encoded parameters |
| 02/07/2002 | US20020015415 Transmission apparatus capable of transmitting high speed modem signal |
| 02/07/2002 | DE10034783A1 Verfahren zur Fehlerverschleierung von Übertragungsfehlern in digitalen Audiodaten Process for error concealment of transmission errors in digital audio data |
| 02/07/2002 | CA2417499A1 Stegotext encoder and decoder |
| 02/07/2002 | CA2350353A1 Relative pulse position in celp vocoding |
| 02/06/2002 | EP1178485A2 Multi-track digital recording/reproducing apparatus and method and multi-track digital recording/reproducing program |
| 02/06/2002 | EP1177653A1 Method to detect and conceal corrupted signal parameters in coded speech communication |
| 02/06/2002 | EP1177651A1 Robust coding for the transmission of audio or video signals |
| 02/06/2002 | EP1177639A1 Quantization in perceptual audio coders with compensation for synthesis filter noise spreading |
| 02/06/2002 | EP1177557A1 Multi-format personal digital audio player |
| 02/06/2002 | CN1334952A Coded enhancement feature for improved performance in coding communication signals |
| 02/06/2002 | CN1078998C Method for time variable spectral analysis based on interpolation for speech coding |
| 02/06/2002 | CN1078990C Transmission system with reconstruction of missing signal samples |
| 02/05/2002 | US6345255 Apparatus and method for coding speech signals by making use of an adaptive codebook |
| 02/05/2002 | US6345248 Low bit-rate speech coder using adaptive open-loop subframe pitch lag estimation and vector quantization |
| 02/05/2002 | US6345247 Excitation vector generator, speech coder and speech decoder |
| 02/05/2002 | US6345246 Apparatus and method for efficiently coding plural channels of an acoustic signal at low bit rates |
| 02/05/2002 | US6345104 Digital watermarks and methods for security documents |
| 02/05/2002 | US6345100 Robust watermark method and apparatus for digital signals |
| 02/05/2002 | US6344808 MPEG-1 audio layer III decoding device achieving fast processing by eliminating an arithmetic operation providing a previously known operation result |
| 01/31/2002 | WO2002009092A1 Frequency interpolating device for interpolating frequency component of signal and frequency interpolating method |
| 01/31/2002 | WO2002009091A1 Frequency thinning device and method for compressing information by thinning out frequency components of signal |
| 01/31/2002 | WO2000063884A9 Method and apparatus for performing packet loss or frame erasure concealment |
| 01/31/2002 | US20020013885 Digital recording and reproducing apparatus |
| 01/31/2002 | US20020013703 Apparatus and method for encoding a signal as well as apparatus and method for decoding signal |
| 01/31/2002 | US20020013701 Virtual zero task time speech and voice recognition multifunctioning device |
| 01/31/2002 | US20020013700 Lossless encoding and decoding system, and a method therefor |
| 01/31/2002 | US20020013699 Lossless encoding and decoding system, and a method therefor |
| 01/31/2002 | US20020013696 Voice processing method and voice processing device |
| 01/31/2002 | US20020013633 Audio processor and audio data processing method |
| 01/31/2002 | US20020011818 Power generating device having a form factor suitable for insertion into a player device |
| 01/30/2002 | EP1176757A2 System, method and apparatus for key distribution, license system, and program providing medium |
| 01/30/2002 | EP1176598A2 Digital recording and reproducing apparatus |
| 01/30/2002 | EP1175676A1 Universal player for compressed audio |
| 01/30/2002 | EP1175675A1 Method and apparatus for processing digitally encoded audio data |
| 01/30/2002 | EP1175670A1 Using gain-adaptive quantization and non-uniform symbol lengths for audio coding |
| 01/30/2002 | CN2475230Y Audio signal A/D converter |
| 01/30/2002 | CN1333981A Efficient in-band signaling for discontinuous transmission and configuration changes in adaptive multi-rate communications systems |
| 01/30/2002 | CN1333628A Magnetic tape record equipment and method, magnetic tape reproducing equipment and method and record medium |
| 01/30/2002 | CN1078774C RDS-TMC Broadcast receiver |
| 01/29/2002 | US6343151 Method and apparatus for transmitting and utilizing analog encoded information |
| 01/29/2002 | US6343138 Security documents with hidden digital data |
| 01/29/2002 | US6342664 Data reproducing apparatus |
| 01/29/2002 | CA2241453C Method for coding an audio signal digitalized at a low sampling rate |
| 01/29/2002 | CA2091754C Method of, and system for, coding analogue signals |
| 01/29/2002 | CA2023167C Speech coding system and a method of encoding speech |
| 01/24/2002 | WO2002007321A1 Digital signal encoding apparatus and method, digital signal decoding apparatus and method, and digital signal transmission system |
| 01/24/2002 | WO2002007162A1 Recording/reproducing method and recorder/reproducer for record medium containing copyright management data |
| 01/24/2002 | WO2002007151A2 Method and apparatus for removing noise from speech signals |
| 01/24/2002 | WO2002007150A2 Watermarking technique for audio media |
| 01/24/2002 | WO2002007061A2 A speech communication system and method for handling lost frames |
| 01/24/2002 | WO2001057627A3 Circuits, systems and methods for information privatization in personal electronic appliances |
| 01/24/2002 | US20020010580 Signal dependent method for bandwith savings in voice over packet networks |
| 01/24/2002 | US20020010577 Apparatus and method for encoding a signal as well as apparatus and method for decoding a signal |
| 01/24/2002 | US20020009208 Authentication of physical and electronic media objects using digital watermarks |
| 01/24/2002 | US20020009070 Communication system with fast control traffic |
| 01/24/2002 | US20020009044 Coded information on CD audio |
| 01/24/2002 | US20020009000 Adding imperceptible noise to audio and other types of signals to cause significant degradation when compressed and decompressed |
| 01/24/2002 | CA2416926A1 Method and apparatus for removing noise from speech signals |
| 01/23/2002 | EP1175030A2 Method and system for multichannel perceptual audio coding using the cascaded discrete cosine transform or modified discrete cosine transform |
| 01/23/2002 | EP1173925A2 Matrixing for lossless encoding and decoding of multichannels audio signals |
| 01/23/2002 | CN1078371C Digital speech decoder having postfilter with diminished time variant spectral tilt |
| 01/22/2002 | US6341165 Coding and decoding of audio signals by using intensity stereo and prediction processes |
| 01/17/2002 | WO2002005537A1 Speech quality estimation for off-line speech recognition |
| 01/17/2002 | WO2002005433A1 A method, a device and a system for compressing a musical and voice signal |
| 01/17/2002 | WO2002005262A2 Sub-band exponential smoothing noise canceling system |