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Class Information
Number: 704/205
Name: Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression > Speech signal processing > For storage or transmission > Frequency
Description: Subject matter wherein the speech










Sub-classes under this class:

Class Number Class Name Patents
704/206 Specialized information 296


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

Patent Number Title Of Patent Date Issued
7451079 Emotion recognition method and device Nov. 11, 2008
7444289 Audio decoding method and apparatus for reconstructing high frequency components with less computation Oct. 28, 2008
7444280 Emphasis of short-duration transient speech features Oct. 28, 2008
7440892 Method, device and program for extracting and recognizing voice Oct. 21, 2008
7426463 System and method for linear prediction Sep. 16, 2008
7421376 Comparison of data signals using characteristic electronic thumbprints Sep. 2, 2008
7415392 System for separating multiple sound sources from monophonic input with non-negative matrix factor deconvolution Aug. 19, 2008
7412377 Voice model for speech processing based on ordered average ranks of spectral features Aug. 12, 2008
7409339 Methods and systems for sample rate conversion Aug. 5, 2008
7406419 Quality assessment tool Jul. 29, 2008
7395210 Progressive to lossless embedded audio coder (PLEAC) with multiple factorization reversible transform Jul. 1, 2008
7392176 Encoding device, decoding device and audio data distribution system Jun. 24, 2008
7392177 Method and system for reducing a voice signal noise Jun. 24, 2008
7386444 Hybrid speech coding and system Jun. 10, 2008
7379864 Method and apparatus for the detection of previous packet loss in non-packetized speech May. 27, 2008
7376554 Excitation for higher band coding in a codec utilising band split coding methods May. 20, 2008
7376562 Method and apparatus for nonlinear frequency analysis of structured signals May. 20, 2008
7373296 Method and apparatus for classifying a spectro-temporal interval of an input audio signal, and a coder including such an apparatus May. 13, 2008
RE40281 Signal processing utilizing a tree-structured array Apr. 29, 2008
7366658 Noise pre-processor for enhanced variable rate speech codec Apr. 29, 2008
7363216 Method and system for parametric characterization of transient audio signals Apr. 22, 2008
7363232 Method and system for enabling audio speed conversion Apr. 22, 2008
7349849 Spacing for microphone elements Mar. 25, 2008
7345233 Apparatus and method for grouping temporal segments of a piece of music Mar. 18, 2008
7346499 Wideband extension of telephone speech for higher perceptual quality Mar. 18, 2008
7346500 Method of translating a voice signal to a series of discrete tones Mar. 18, 2008
7346516 Method of segmenting an audio stream Mar. 18, 2008
7343281 Processing of multi-channel signals Mar. 11, 2008
7330562 Watermarking in the time-frequency domain Feb. 12, 2008
7328160 Encoding device and decoding device Feb. 5, 2008
7319959 Multi-source phoneme classification for noise-robust automatic speech recognition Jan. 15, 2008
7317309 Wideband signal analyzing apparatus, wideband period jitter analyzing apparatus, and wideband skew analyzing apparatus Jan. 8, 2008
7315822 System and method for a media codec employing a reversible transform obtained via matrix lifting Jan. 1, 2008
7302066 Method for eliminating an unwanted signal from a mixture via time-frequency masking Nov. 27, 2007
7286980 Speech processing apparatus and method for enhancing speech information and suppressing noise in spectral divisions of a speech signal Oct. 23, 2007
7283967 Encoding device decoding device Oct. 16, 2007
7280958 Method and system for suppressing receiver audio regeneration Oct. 9, 2007
7277847 Method for determining intensity parameters of background noise in speech pauses of voice signals Oct. 2, 2007
7272551 Computational effectiveness enhancement of frequency domain pitch estimators Sep. 18, 2007
7272559 Noninvasive detection of neuro diseases Sep. 18, 2007
7269550 Encoding device and decoding device Sep. 11, 2007
7263479 Determining characteristics of received voice data packets to assist prosody analysis Aug. 28, 2007
7254532 Method for making a voice activity decision Aug. 7, 2007
7243061 Multistage inverse quantization having a plurality of frequency bands Jul. 10, 2007
7233893 Method and apparatus for transmitting wideband speech signals Jun. 19, 2007
7233894 Low-frequency band noise detection Jun. 19, 2007
7216074 System for bandwidth extension of narrow-band speech May. 8, 2007
7206739 Excitation codebook search method in a speech coding system Apr. 17, 2007
7205910 Signal encoding apparatus and signal encoding method, and signal decoding apparatus and signal decoding method Apr. 17, 2007
7191136 Efficient coding of high frequency signal information in a signal using a linear/non-linear prediction model based on a low pass baseband Mar. 13, 2007

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