Patents
Sitemap › G10 - Musical instruments; Acoustics › G10L - Speech analysis or synthesis; Speech recognition; Speech or voice processing; Speech or audio coding or decoding › 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
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)
09/2000
09/19/2000US6122384 Noise suppression system and method
09/19/2000US6122338 Audio encoding transmission system
09/19/2000US6122230 Universal compressed audio player
09/19/2000US6121904 Lossless data compression with low complexity
09/19/2000CA2209570C Adaptive transform coding system, adaptive transform decoding system and adaptive transform coding/decoding system
09/19/2000CA2177414C Improved adaptive codebook-based speech compression system
09/19/2000CA2170007C Determination of gain for pitch period in coding of speech signal
09/18/2000CA2300385A1 Program links and bulletins for audio information delivery
09/17/2000CA2300647A1 Audio coding, decoding and transcoding procedures
09/17/2000CA2300646A1 Coding, decoding and transcoding procedures
09/14/2000WO2000054529A1 ARRANGEMENT FOR IMPROVING THE SPEECH QUALITY, ESPECIALLY FOR VoIP (VOICE OVER IP) CALLS
09/14/2000WO2000054258A1 Sound source vector generator and voice encoder/decoder
09/14/2000WO2000054253A1 Apparatus, system and method for speech compression and decompression
09/13/2000EP1035713A2 Partial voice message deletion
09/13/2000EP1035538A2 Multimode quantizing of the prediction residual in a speech coder
09/12/2000US6119092 Audio decoder bypass module for communicating compressed audio to external components
09/12/2000US6119086 Speech coding via speech recognition and synthesis based on pre-enrolled phonetic tokens
09/12/2000US6119083 Training process for the classification of a perceptual signal
09/12/2000US6119082 Speech coding system and method including harmonic generator having an adaptive phase off-setter
09/12/2000US6119081 Pitch estimation method for a low delay multiband excitation vocoder allowing the removal of pitch error without using a pitch tracking method
09/12/2000US6119080 Unified recursive decomposition architecture for cosine modulated filter banks
09/12/2000US6118821 Compressed code decoding device and audio decoding device
09/12/2000US6118392 Lossless data compression with low complexity
09/12/2000CA2126936C Vector quantizer
09/07/2000DE19906512A1 Auxiliary information signal transmission and/or recording method for digital audio signals uses insertion of auxiliary signals in at least one partial band or spectral component of audio signal after data reduction
09/06/2000EP1032933A1 Speech coding method and terminals for implementing said method
09/05/2000US6115689 Scalable audio coder and decoder
09/05/2000US6115688 Process and device for the scalable coding of audio signals
09/05/2000US6115685 Phase detection apparatus and method, and audio coding apparatus and method
09/05/2000US6113653 Method and apparatus for coding an information signal using delay contour adjustment
09/05/2000CA2256875C System and method for communicating digitally-encoded acoustic information across a network between computers
09/05/2000CA2196837C Voice encoding/decoding apparatus
09/05/2000CA2169999C Wide-band signal encoder
08/2000
08/31/2000WO2000051279A1 Device and method for producing an encoded audio and/or video data stream
08/31/2000WO2000051243A1 A backward decoding method of digital audio data
08/31/2000WO2000051108A1 System and method for efficient time-domain aliasing cancellation
08/31/2000WO2000019412A9 Voice communication by phoneme recognition and text to speech
08/31/2000CA2329484A1 System and method for efficient time-domain aliasing cancellation
08/30/2000EP1032152A2 Unequal error protection for multi-mode vocoders
08/30/2000EP1031142A1 Perceptual subband audio coding using adaptive multitype sparse vector quantization, and signal saturation scaler
08/29/2000US6112170 Method for decompressing linear PCM and AC3 encoded audio gain value
08/29/2000US6112080 Wireless communication method and system
08/29/2000US6111954 Steganographic methods and media for photography
08/29/2000US6111870 Method and apparatus for compressing and transmitting high speed data
08/26/2000CA2298836A1 Coupled error code protection for multi-mode vocoders
08/24/2000WO2000011649A9 Speech encoder using a classifier for smoothing noise coding
08/24/2000WO2000011648A9 Speech encoder using voice activity detection in coding noise
08/23/2000EP1030290A2 Method for hidden transferring and/or storing of additional information within a signal, particularly an audio signal
08/23/2000CN1264533A Method and apparatus for encoding and decoding multiple audio channels at low bit rates
08/22/2000US6108633 Audio decoder core constants ROM optimization
08/22/2000US6108626 Object oriented audio coding
08/22/2000US6108625 Scalable audio coding/decoding method and apparatus without overlap of information between various layers
08/22/2000US6108624 Method for improving performance of a voice coder
08/22/2000US6108623 Comfort noise generator, using summed adaptive-gain parallel channels with a Gaussian input, for LPC speech decoding
08/22/2000US6108622 Arithmetic logic unit controller for linear PCM scaling and decimation in an audio decoder
08/22/2000US6108621 Speech analysis method and speech encoding method and apparatus
08/22/2000US6108372 Method and apparatus for decoding variable rate data using hypothesis testing to determine data rate
08/22/2000CA2177422C Voice/unvoiced classification of speech for use in speech decoding during frame erasures
08/17/2000WO2000048400A1 Distributed production system for digitally encoding information
08/17/2000WO2000048350A2 Method and receiver for receiving a broadcast signal having encoded sound transmission and/or encoded data transmission, whereby the authentication signal is received via a different transmission path
08/17/2000WO2000048171A1 Speech enhancement with gain limitations based on speech activity
08/17/2000WO2000048170A1 Celp transcoding
08/17/2000WO2000048169A1 A method and apparatus for pre-processing speech signals prior to coding by transform-based speech coders
08/17/2000WO2000017858A9 Robust fast search for two-dimensional gain vector quantizer
08/17/2000WO2000011660A9 Adaptive tilt compensation for synthesized speech residual
08/17/2000WO2000011659A9 Speech encoder using gain normalization that combines open and closed loop gains
08/17/2000WO2000011651A9 Synchronized encoder-decoder frame concealment using speech coding parameters
08/17/2000DE19905628A1 Verfahren und Empfänger zum Empfang eines Rundfunksignal mit verschlüsselten Inhalten The method and receiver for receiving a broadcast signal with encrypted content
08/17/2000CA2361379A1 Distributed production system for digitally encoding information
08/16/2000EP1028555A2 Error detection encoder with unequal error protection
08/16/2000EP1028425A2 Low power system and method for playing compressed audio data
08/16/2000EP1028411A2 Coding apparatus
08/16/2000EP1027651A1 Apparatus and method for providing robust error recovery for errors that occur in a lossy transmission environment
08/16/2000CN1263625A Method for decoding audio signal with transmission error correction
08/16/2000CN1263624A Recording/reproducing apparatus
08/16/2000CN1263426A Voice frequency processing equipment, receiver, filtering and method for recovering useful signal
08/16/2000CN1055585C Code exciting linear predict coder and decoder
08/15/2000US6104996 Audio coding with low-order adaptive prediction of transients
08/15/2000US6104994 Method for speech coding under background noise conditions
08/15/2000US6104993 Apparatus and method for rate determination in a communication system
08/15/2000US6104992 Adaptive gain reduction to produce fixed codebook target signal
08/15/2000US6104991 Speech encoding and decoding system which modifies encoding and decoding characteristics based on an audio signal
08/10/2000WO2000046796A1 Method and apparatus for eighth-rate random number generation for speech coders
08/10/2000WO2000046795A1 Speech synthesizer based on variable rate speech coding
08/10/2000WO2000031996A3 Efficient in-band signaling for discontinuous transmission and configuration changes in adaptive multi-rate communications systems
08/10/2000WO2000031675A3 Printing and validation of self validating security documents
08/10/2000WO2000011655A9 Low complexity random codebook structure
08/10/2000WO2000011653A9 Speechencoder using continuous warping combined with long term prediction
08/10/2000WO1999041737A8 Method and apparatus for high speed determination of an optimum vector in a fixed codebook
08/10/2000DE19907964C1 Encryption device for audio and/or video signals uses coder providing data stream with pre-determined syntax and encryption stage altering useful data in data stream without altering syntax
08/09/2000EP1026844A2 Receiver for Digital Audio Broadcast DAB
08/09/2000EP1025705A1 Apparatus and method for partial buffering transmitted data to provide robust error recovery in a lossy transmission environment
08/09/2000EP1025648A1 Apparatus and method for localizing transmission errors to provide robust error recovery in a lossy transmission environment
08/09/2000EP1025646A2 Methods and devices for encoding audio signals and methods and devices for decoding a bit stream
08/09/2000EP1025536A1 System and method for performing wavelet-like and inverse wavelet-like transformations of digital data
08/09/2000CN1262815A Lossless encoding/decoding in transmission system
08/09/2000CN1262577A Method for transmitting data in radio speech channel
08/08/2000US6101475 Method for the cascaded coding and decoding of audio data
08/08/2000US6101474 Voice recording/reproducing apparatus
08/08/2000US6101469 Formant shift-compensated sound synthesizer and method of operation thereof
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