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)
06/1998
06/30/1998CA2117829C Perceptual coding of audio-signals
06/25/1998WO1998027659A1 Error correction decoder for vocoding system
06/25/1998WO1998027542A1 Audio-based wide area information system
06/25/1998WO1998027504A2 Method and apparatus for embedding auxiliary data in a primary data signal
06/25/1998CA2275488A1 Error correction decoder for vocoding system
06/25/1998CA2274126A1 Audio-based wide area information system
06/25/1998CA2273993A1 Method and apparatus for embedding auxiliary data in a primary data signal
06/24/1998EP0849924A2 Method and arrangement for recording a call on a memory medium
06/24/1998EP0849724A2 High quality speech coder and coding method
06/24/1998CN1185854A Dictation system
06/24/1998CN1185849A Reduced complexity signal transmission system
06/17/1998EP0848374A2 A method and a device for speech encoding
06/17/1998CN1185262A Transcoder with prevention of tandem coding of speech
06/16/1998US5768473 Adaptive speech filter
06/16/1998US5768426 Graphics processing system employing embedded code signals
06/16/1998US5768314 Communications system
06/16/1998US5768308 Signal processor
06/16/1998US5768292 Error handling process for MPEG decoder
06/16/1998US5768264 Time division multiple access base station supporting ISDN messages
06/16/1998CA2110645C Method of and device for quantizing excitation gains in speech coders based on analysis-by-synthesis techniques
06/11/1998WO1998025364A2 Multi-station audio distribution apparatus
06/11/1998WO1998012825A3 Method for storing information on a chip card and device, especially a car radio, for implementing said method
06/10/1998EP0847211A2 Method for transmitting data, especially GSM data
06/10/1998EP0847003A2 An audio memo system and method of operation thereof
06/10/1998EP0846405A1 Process for reducing redundancy during the coding of multichannel signals and device for decoding redundancy-reduced multichannel signals
06/10/1998EP0846375A1 Process and device for the scalable coding of audio signals
06/10/1998CN1184548A Predictive split-matrix quantization of spectral parameters for efficient coding of speech
06/09/1998US5765136 Encoded data decoding apparatus adapted to be used for expanding compressed data and image audio multiplexed data decoding apparatus using the same
06/09/1998US5765128 Apparatus for synchronizing a voice coder and a voice decoder of a vector-coding type
06/09/1998US5765127 High efficiency encoding method
06/09/1998US5765126 Method and apparatus for variable length encoding of separated tone and noise characteristic components of an acoustic signal
06/09/1998US5764900 System and method for communicating digitally-encoded acoustic information across a network between computers
06/09/1998US5764853 Voice recognition device and method using a (GGM) Guaranteed Global minimum Mapping
06/09/1998US5764763 Apparatus and methods for including codes in audio signals and decoding
06/09/1998US5764698 Method in a data processing system
06/09/1998US5764628 Dual port interface for communication between a voice-over-data system and a conventional voice system
06/09/1998US5764627 Communication system
06/09/1998CA2122853C Method and apparatus for speech encoding, speech decoding, and speech post processing
06/04/1998WO1998024053A1 System and method for performing wavelet-like and inverse wavelet-like transformations of digital data
06/04/1998WO1998024032A1 System and method for scheduling and processing image and sound data
06/02/1998US5761702 Recording apparatus including a plurality of EEPROMS where parallel accessing is used
06/02/1998US5761635 Method and apparatus for implementing a long-term synthesis filter
06/02/1998US5761634 In a wireless communication system
06/02/1998US5761633 Method of encoding and decoding speech signals
06/02/1998US5761632 For coding speech signals
06/02/1998US5761275 Telephone answering machine with audio signal compression/expansion circuit
05/1998
05/27/1998EP0843933A2 Transmission of a digital information signal having a specific first sampling frequency
05/27/1998EP0843875A1 Celp speech coder with reduced complexity synthesis filter
05/27/1998EP0843874A2 A method for coding human speech and an apparatus for reproducing human speech so coded
05/26/1998USRE35809 Digital signal encoding with quantizing based on masking from multiple frequency bands
05/26/1998US5758316 Methods and apparatus for information encoding and decoding based upon tonal components of plural channels
05/26/1998US5758315 Encoding/decoding method and apparatus using bit allocation as a function of scale factor
05/26/1998US5758256 Method of transporting speech information in a wireless cellular system
05/26/1998US5758020 Methods and apparatus for encoding and decoding signals, methods for transmitting signals, and an information recording medium
05/26/1998US5757938 High efficiency encoding device and a noise spectrum modifying device and method
05/26/1998US5757306 Vector quantization with a control circuit for input and predicted vector quantization
05/20/1998EP0843302A2 Voice coder using sinusoidal analysis and pitch control
05/20/1998EP0843301A2 Methods for generating comfort noise during discontinous transmission
05/20/1998EP0843168A2 An information processing apparatus, an information processing method, and a medium for use in a three-dimensional virtual reality space sharing system
05/20/1998EP0842513A1 Data storage device
05/20/1998EP0842509A1 Method and apparatus for generating and encoding line spectral square roots
05/19/1998US5754976 Algebraic codebook with signal-selected pulse amplitude/position combinations for fast coding of speech
05/19/1998US5754974 Spectral magnitude representation for multi-band excitation speech coders
05/19/1998US5754973 Methods and apparatus for replacing missing signal information with synthesized information and recording medium therefor
05/19/1998US5754734 Method of transmitting voice coding information using cyclic redundancy check bits
05/19/1998US5754733 Method and apparatus for generating and encoding line spectral square roots
05/19/1998US5754589 Noncompressed voice and data communication over modem for a computer-based multifunction personal communications system
05/19/1998US5754427 Data recording method
05/14/1998WO1998020696A2 Method and apparatus for compressing and transmitting high speed data
05/14/1998WO1998020483A1 Sound source vector generator, voice encoder, and voice decoder
05/14/1998WO1998020423A1 System and method for communicating digitally-encoded acoustic information across a network between computers
05/13/1998EP0841656A2 Method and apparatus for speech and audio signal encoding
05/13/1998EP0840975A1 Assessment of signal quality
05/13/1998EP0462558B1 Speech coding system
05/13/1998CN1181825A Dictation and transcription appts
05/12/1998US5752226 Method and apparatus for reducing noise in speech signal
05/12/1998US5752225 Method and apparatus for split-band encoding and split-band decoding of audio information using adaptive bit allocation to adjacent subbands
05/12/1998US5752224 Information encoding method and apparatus, information decoding method and apparatus information transmission method and information recording medium
05/12/1998US5752223 Code-excited linear predictive coder and decoder with conversion filter for converting stochastic and impulsive excitation signals
05/12/1998US5752222 Speech decoding method and apparatus
05/12/1998US5751903 Low rate multi-mode CELP codec that encodes line SPECTRAL frequencies utilizing an offset
05/12/1998US5751902 Adaptive prediction filter using block floating point format and minimal recursive recomputations
05/12/1998US5751901 Method for searching an excitation codebook in a code excited linear prediction (CELP) coder
05/12/1998US5751900 Speech pitch lag coding apparatus and method
05/12/1998US5751806 Audio information dissemination using various transmission modes
05/12/1998US5751771 Waveform data compression apparatus and waveform data expansion apparatus
05/07/1998WO1998019431A1 Method and apparatus for decoding variable rate data
05/07/1998WO1998019298A1 Postfiltering audio signals, especially speech signals
05/07/1998CA2269224A1 Method and apparatus for decoding variable rate data
05/06/1998EP0839376A1 Audio storing and reproducing apparatus
05/06/1998CN1181151A Depth-first algebraic-codebook search for fast coding of speech
05/06/1998CN1181150A Algebraic codebook with signal-selected pulse amplitudes for fast coding of speech
05/06/1998CN1181149A 波形语音合成 Waveform speech synthesis
05/05/1998US5749065 Speech encoding method, speech decoding method and speech encoding/decoding method
05/05/1998US5748839 Quantization of input vectors and without rearrangement of vector elements of a candidate vector
05/05/1998US5748835 Audio signal decoding apparatus and method for a disc driving system
05/05/1998US5748783 Method and apparatus for robust information coding
05/05/1998US5748763 Image steganography system featuring perceptually adaptive and globally scalable signal embedding
04/1998
04/29/1998EP0838752A2 Communication device
04/28/1998US5745871 Pitch period estimation for use with audio coders
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