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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
5715372 Method and apparatus for characterizing an input signal Feb. 3, 1998
5715363 Method and apparatus for processing speech Feb. 3, 1998
5687184 Method and circuit arrangement for speech signal transmission Nov. 11, 1997
5675708 Audio media boundary traversal method and apparatus Oct. 7, 1997
5657350 Audio coder/decoder with recursive determination of prediction coefficients based on reflection coefficients derived from correlation coefficients Aug. 12, 1997
5651093 Method of processing audio signal Jul. 22, 1997
5649054 Method and apparatus for coding digital sound by subtracting adaptive dither and inserting buried channel bits and an apparatus for decoding such encoding digital sound Jul. 15, 1997
5642466 Intonation adjustment in text-to-speech systems Jun. 24, 1997
5642368 Error protection for multimode speech coders Jun. 24, 1997
5636291 Continuous parameter hidden Markov model approach to automatic handwriting recognition Jun. 3, 1997
5621760 Speech coding transmission system and coder and decoder therefor Apr. 15, 1997
5617507 Speech segment coding and pitch control methods for speech synthesis systems Apr. 1, 1997
5600753 Speech recognition by neural network adapted to reference pattern learning Feb. 4, 1997
5596647 Integrated video and audio signal distribution system and method for use on commercial aircraft and other vehicles Jan. 21, 1997
5592583 Voice output device for outputting vocal instructions when the waiting time for a key input operation exceeds a set time limit Jan. 7, 1997
5579430 Digital encoding process Nov. 26, 1996
5573403 Audio frequency converter for audio-phonatory training Nov. 12, 1996
5548647 Fixed text speaker verification method and apparatus Aug. 20, 1996
5546565 Input/output apparatus having a pen, and method of associating and processing handwritten image data and voice data Aug. 13, 1996
5539858 Voice coding communication system and apparatus Jul. 23, 1996
5537601 Programmable digital signal processor for performing a plurality of signal processings Jul. 16, 1996
5526407 Method and apparatus for managing information Jun. 11, 1996
5517492 Increased speech interleave with reduced delay May. 14, 1996
5508949 Fast subband filtering in digital signal coding Apr. 16, 1996
5499315 Adaptive digital audio interpolation system Mar. 12, 1996
5488704 Speech codec Jan. 30, 1996
5475789 Method of compressing an audio signal using adaptive bit allocation taking account of temporal masking Dec. 12, 1995
5471557 Speech recognition system utilizing a neural network Nov. 28, 1995
5457782 Digital signal processing circuit board having use for voice processing system Oct. 10, 1995
5455889 Labelling speech using context-dependent acoustic prototypes Oct. 3, 1995
5448680 Voice communication processing system Sep. 5, 1995
5444816 Dynamic codebook for efficient speech coding based on algebraic codes Aug. 22, 1995
5442553 Wireless motor vehicle diagnostic and software upgrade system Aug. 15, 1995
5440663 Computer system for speech recognition Aug. 8, 1995
5430826 Voice-activated switch Jul. 4, 1995
5426745 Apparatus including a pair of neural networks having disparate functions cooperating to perform instruction recognition Jun. 20, 1995
5390279 Partitioning speech rules by context for speech recognition Feb. 14, 1995
5388193 Symmetrical decoder Feb. 7, 1995
5388221 Adaptive digital audio interpolation system Feb. 7, 1995
5384890 Method and apparatus for providing multiple clients simultaneous access to a sound data stream Jan. 24, 1995
5371544 Geometric vector quantization Dec. 6, 1994
5327521 Speech transformation system Jul. 5, 1994
5327520 Method of use of voice message coder/decoder Jul. 5, 1994
5309547 Method of speech recognition May. 3, 1994
5301255 Audio signal subband encoder Apr. 5, 1994
5297231 Digital signal processor interface for computer system Mar. 22, 1994
5295223 Voice/voice band data discrimination apparatus Mar. 15, 1994
5293584 Speech recognition system for natural language translation Mar. 8, 1994
5289562 Pattern representation model training apparatus Feb. 22, 1994
5285520 Predictive coding apparatus Feb. 8, 1994

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