| 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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| 01/26/1999 | US5864813 Method, system and product for harmonic enhancement of encoded audio signals |
| 01/26/1999 | US5864802 Digital audio encoding method utilizing look-up table and device thereof |
| 01/26/1999 | US5864799 Apparatus and method for generating noise in a digital receiver |
| 01/26/1999 | US5864798 Method and apparatus for adjusting a spectrum shape of a speech signal |
| 01/26/1999 | US5864797 Pitch-synchronous speech coding by applying multiple analysis to select and align a plurality of types of code vectors |
| 01/26/1999 | US5864796 Speech synthesis with equal interval line spectral pair frequency interpolation |
| 01/26/1999 | US5864794 Signal encoding and decoding system using auditory parameters and bark spectrum |
| 01/26/1999 | US5864791 Pitch extracting method for a speech processing unit |
| 01/26/1999 | US5864650 Speech encoding method and apparatus using tree-structure delta code book |
| 01/26/1999 | CA2126927C Noncompressed voice and data communication over modem for a computer-based multifunction personal communications system |
| 01/21/1999 | WO1999003210A1 Audio encoder |
| 01/21/1999 | WO1999003097A2 Transmitter with an improved speech encoder and decoder |
| 01/21/1999 | WO1999003096A1 Information decoder and decoding method, information encoder and encoding method, and distribution medium |
| 01/21/1999 | WO1999003095A1 Transmitter with an improved harmonic speech encoder |
| 01/21/1999 | WO1999003094A1 Method for voice signal coding and/or decoding by means of a long term prediction and a multipulse excitation signal |
| 01/21/1999 | WO1999003093A1 Combined speech coder and echo canceler |
| 01/21/1999 | DE19730130A1 Verfahren zum Codieren eines Audiosignals A method of encoding an audio signal |
| 01/21/1999 | DE19730129A1 Verfahren zum Signalisieren einer Rauschsubstitution beim Codieren eines Audiosignals A method for signaling a noise substitution when coding an audio signal |
| 01/21/1999 | CA2297655A1 Combined speech coder and echo canceler |
| 01/21/1999 | CA2296006A1 Audio encoder |
| 01/20/1999 | EP0892582A2 Method and apparatus for error masking in multi-channel audio signals |
| 01/20/1999 | EP0891617A1 Signal coding and decoding system, particularly for a digital audio signal |
| 01/20/1999 | EP0809842A4 Adaptive speech filter |
| 01/20/1999 | CN1205599A Compressed code decoding device and audio decoding device |
| 01/19/1999 | US5862518 Speech decoder for decoding a speech signal using a bad frame masking unit for voiced frame and a bad frame masking unit for unvoiced frame |
| 01/19/1999 | US5862260 Methods for surveying dissemination of proprietary empirical data |
| 01/19/1999 | US5862178 Method and apparatus for speech transmission in a mobile communications system |
| 01/19/1999 | CA2142393C Excitation signal synthesis during frame erasure or packet loss |
| 01/19/1999 | CA2130877C Speech pitch coding system |
| 01/14/1999 | WO1999001948A2 Method and device for signal coding |
| 01/14/1999 | WO1999001866A1 Speech coding |
| 01/14/1999 | WO1999001864A1 Methods and devices for noise conditioning signals representative of audio information in compressed and digitized form |
| 01/14/1999 | WO1998033284A3 Audio compression |
| 01/14/1999 | DE19729494A1 Verfahren und Anordnung zur Codierung und/oder Decodierung von Sprachsignalen, insbesondere für digitale Diktiergeräte Method and apparatus for encoding and / or decoding of speech signals, in particular for digital dictation |
| 01/13/1999 | EP0890943A2 Voice coding and decoding system |
| 01/13/1999 | EP0890222A1 Table-based compression with embedded coding |
| 01/13/1999 | EP0654194B1 A speech decoding method and a speech decoder |
| 01/13/1999 | CN1205097A Voice encoder, voice decoder, recording medium on which program for realizing voice encoding/decoding is recorded and mobile communication apparatus |
| 01/13/1999 | CN1204916A Telephone apparatus with audio recording function and audio recording method of telephone apparatus |
| 01/12/1999 | US5859932 Vector quantization coding apparatus and decoding apparatus |
| 01/12/1999 | CA2144102C Linear prediction coefficient generation during frame erasure or packet loss |
| 01/12/1999 | CA2133020C Minimum shift data arranging method and apparatus |
| 01/12/1999 | CA2131956C Vector quantization of a time sequential signal by quantizing an error between subframe and interpolated feature vectors |
| 01/07/1999 | WO1999000791A1 Method and apparatus for improving the voice quality of tandemed vocoders |
| 01/07/1999 | DE19727938A1 Verfahren und Vorrichtung zum Codieren von Signalen Method and apparatus for encoding signals |
| 01/07/1999 | CA2256329A1 Method and apparatus for improving the voice quality of tandemed vocoders |
| 01/05/1999 | US5857168 Method and apparatus for coding signal while adaptively allocating number of pulses |
| 01/05/1999 | US5857167 Combined speech coder and echo canceler |
| 01/05/1999 | US5856797 Data encoding device, data decoding device, data encoding method and data decoding method |
| 12/30/1998 | WO1998059486A1 System and method for coding and broadcasting voice data |
| 12/30/1998 | EP0850471A4 Very low bit rate voice messaging system using variable rate backward search interpolation processing |
| 12/30/1998 | CN1203411A Vector search method |
| 12/29/1998 | US5854998 Speech processing system quantizer of single-gain pulse excitation in speech coder |
| 12/29/1998 | US5854814 Digital transmission system with improved decoder in the receiver |
| 12/23/1998 | WO1998058365A1 Storage medium having electronic circuits, and voice synthesizer having the storage medium |
| 12/23/1998 | EP0886263A2 Environmentally compensated speech processing |
| 12/23/1998 | EP0792502A4 Very low bit rate voice messaging system using asymmetric voice compression processing |
| 12/23/1998 | CN1202785A Telephone device comprising digital processing element for speech signals and method implemented in such device |
| 12/23/1998 | CN1041374C Network echo canceller |
| 12/22/1998 | US5852806 Switched filterbank for use in audio signal coding |
| 12/22/1998 | US5852805 MPEG audio decoder for detecting and correcting irregular patterns |
| 12/22/1998 | US5852669 Automatic face and facial feature location detection for low bit rate model-assisted H.261 compatible coding of video |
| 12/16/1998 | EP0884850A2 Scalable audio coding/decoding method and apparatus |
| 12/16/1998 | CA2239357A1 Environmentally compensated speech processing |
| 12/15/1998 | US5850574 Apparatus for voice encoding/decoding utilizing a control to minimize a time required upon encoding/decoding each subframe of data on the basis of word transfer information |
| 12/15/1998 | US5850481 Steganographic system |
| 12/15/1998 | US5850456 Apparatus for encoding multiple digital information signals |
| 12/15/1998 | US5850418 Encoding system and encoding method for encoding a digital signal having at least a first and a second digital component |
| 12/15/1998 | CA2021514C Constrained-stochastic-excitation coding |
| 12/09/1998 | EP0883107A1 Sound source vector generator, voice encoder, and voice decoder |
| 12/09/1998 | EP0882288A1 Signal processing arrangements |
| 12/09/1998 | CN1201308A Information coding method and apparatus, information decoding method and apparatus, and information recording medium |
| 12/08/1998 | US5848391 Method subband of coding and decoding audio signals using variable length windows |
| 12/08/1998 | US5848387 Perceptual speech coding using prediction residuals, having harmonic magnitude codebook for voiced and waveform codebook for unvoiced frames |
| 12/08/1998 | US5848130 System and method for enhanced intelligibility of voice messages |
| 12/03/1998 | DE19735675A1 Verfahren zum Verschleiern von Fehlern in einem Audiodatenstrom A method for concealing errors in an audio data stream |
| 12/02/1998 | EP0880868A2 Method and apparatus for compressing and transmitting high speed data |
| 12/02/1998 | EP0880772A1 Speech coding, reconstruction and recognition using acoustics and electromagnetic waves |
| 12/02/1998 | EP0832521B1 Process for encoding an audio signal digitalised at a low sampling frequency |
| 12/02/1998 | EP0801789B1 Speech coding method using synthesis analysis |
| 12/02/1998 | EP0700562A4 Credit card size audio record and playback device |
| 12/02/1998 | EP0573398B1 C.E.L.P. Vocoder |
| 12/02/1998 | CN1200645A Method and apparatus for error masking in multi-channel audio signals |
| 12/01/1998 | US5845249 Microarchitecture of audio core for an MPEG-2 and AC-3 decoder |
| 12/01/1998 | US5845247 Reproducing apparatus |
| 12/01/1998 | US5845244 Adapting noise masking level in analysis-by-synthesis employing perceptual weighting |
| 12/01/1998 | US5844513 Method and apparatus for transmitting sigma delta modulated audio signals |
| 11/26/1998 | WO1998053566A1 Multi-station video/audio distribution apparatus |
| 11/25/1998 | EP0880260A2 Echo/noise canceler with delay compensation |
| 11/25/1998 | EP0880256A2 Portable telephone device |
| 11/25/1998 | EP0880246A2 Compressed code decoding device and audio decoding device |
| 11/25/1998 | EP0879527A1 Training process |
| 11/25/1998 | CN1200173A Very low bit rate voice messaging system using variable rate backward search interpolation processing |
| 11/25/1998 | CN1200000A Improved methods for generating comport noise during discontinuous transmission |
| 11/25/1998 | CN1199959A Audio coding method and apparatus |
| 11/24/1998 | US5842160 Method for improving the voice quality in low-rate dynamic bit allocation sub-band coding |
| 11/24/1998 | US5841978 Network linking method using steganographically embedded data objects |
| 11/24/1998 | US5841945 Voice signal compacting and expanding device with frequency division |
| 11/24/1998 | US5841886 Security system for photographic identification |
| 11/24/1998 | US5841377 Adaptive transform coding system, adaptive transform decoding system and adaptive transform coding/decoding system |