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Class Information
Number: 704/200
Name: Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression > Speech signal processing
Description: Subject matter wherein the system performs operations or functions on signals which represent speech










Sub-classes under this class:

Class Number Class Name Patents
704/270 Application 2,823
704/201 For storage or transmission 953
704/200.1 Psychoacoustic 590
704/231 Recognition 1,343
704/258 Synthesis 939


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Patent Number Title Of Patent Date Issued
6205420 Method and device for instantly changing the speed of a speech Mar. 20, 2001
6177928 Flexible synchronization framework for multimedia streams having inserted time stamp Jan. 23, 2001
6173257 Completed fixed codebook for speech encoder Jan. 9, 2001
6167371 Speech filter for digital electronic communications Dec. 26, 2000
6154499 Communication systems using nested coder and compatible channel coding Nov. 28, 2000
6145114 Method of enhanced max-log-a posteriori probability processing Nov. 7, 2000
6144939 Formant-based speech synthesizer employing demi-syllable concatenation with independent cross fade in the filter parameter and source domains Nov. 7, 2000
6138096 Apparatus for speech-based generation, audio translation, and manipulation of text messages over voice lines Oct. 24, 2000
6134274 Method and apparatus for allocating data for transmission via discrete multiple tones Oct. 17, 2000
6125120 Transmission equipment for an interexchange connection Sep. 26, 2000
6109923 Method and apparatus for teaching prosodic features of speech Aug. 29, 2000
6101465 System and method for bit interleaving of full-rate speech data Aug. 8, 2000
6055495 Speech segmentation Apr. 25, 2000
6029124 Sequential, nonparametric speech recognition and speaker identification Feb. 22, 2000
6026398 System and methods for searching and matching databases Feb. 15, 2000
6026361 Speech intelligibility testing system Feb. 15, 2000
6009383 Digital connection for voice activated services on wireless networks Dec. 28, 1999
6006108 Digital audio processing in a dual-mode telephone Dec. 21, 1999
6002999 Interface apparatus and method between a selector and a plurality of vocoders in a mobile communication system Dec. 14, 1999
5999904 Tracking initiative in collaborative dialogue interactions Dec. 7, 1999
5978755 Dictation device for the storage of speech signals Nov. 2, 1999
5974373 Method for reducing noise in speech signal and method for detecting noise domain Oct. 26, 1999
5950152 Method of changing a pitch of a VCV phoneme-chain waveform and apparatus of synthesizing a sound from a series of VCV phoneme-chain waveforms Sep. 7, 1999
5950151 Methods for implementing non-uniform filters Sep. 7, 1999
5924060 Digital coding process for transmission or storage of acoustical signals by transforming of scanning values into spectral coefficients Jul. 13, 1999
5895220 Audio frequency converter for audio-phonatory training Apr. 20, 1999
5893900 Method and apparatus for indexing an analog audio recording and editing a digital version of the indexed audio recording Apr. 13, 1999
5893720 Development language system for infants Apr. 13, 1999
5873728 Sound pronunciation comparing method in sound signal reproducing apparatus Feb. 23, 1999
5870705 Method of setting input levels in a voice recognition system Feb. 9, 1999
5857172 Activation control of a speech recognizer through use of a pointing device Jan. 5, 1999
5848392 Audio signal processing circuit for changing the pitch of recorded speech Dec. 8, 1998
5845239 Modular audio data processing architecture Dec. 1, 1998
5835895 Infinite impulse response filter for 3D sound with tap delay line initialization Nov. 10, 1998
5826221 Vocal tract prediction coefficient coding and decoding circuitry capable of adaptively selecting quantized values and interpolation values Oct. 20, 1998
5819005 Modular digital recording logger Oct. 6, 1998
5813027 Method for storing and transferring wave table audio samples using a DSP cache, a link list structure, and compression Sep. 22, 1998
5810600 Voice recording/reproducing apparatus Sep. 22, 1998
5809499 Computational method for discovering patterns in data sets Sep. 15, 1998
5809464 Apparatus for recording speech for subsequent text generation Sep. 15, 1998
5774857 Conversion of communicated speech to text for tranmission as RF modulated base band video Jun. 30, 1998
5771486 Method for reducing noise in speech signal and method for detecting noise domain Jun. 23, 1998
5754127 Information encoding method and apparatus, and information decoding method and apparatus May. 19, 1998
5754972 Speech recognition system for languages with compound words May. 19, 1998
5752082 System for multiplexing pins of a PC card socket and PC card bus adapter for providing audio communication between PC card and computer sound system May. 12, 1998
5752231 Method and system for performing speaker verification on a spoken utterance May. 12, 1998
5745873 Speech recognition using final decision based on tentative decisions Apr. 28, 1998
5736943 Method for determining the type of coding to be selected for coding at least two signals Apr. 7, 1998
5734791 Rapid tree-based method for vector quantization Mar. 31, 1998
5717825 Algebraic code-excited linear prediction speech coding method Feb. 10, 1998

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