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Class Information
Number: 704/216
Name: Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression > Speech signal processing > For storage or transmission > Time > Correlation function
Description: Subject matter wherein analysis of speech

Sub-classes under this class:

Class Number Class Name Patents
704/217 Autocorrelation 178
704/218 Cross-correlation 103

Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8706488 Methods and apparatus for formant-based voice synthesis Apr. 22, 2014
8694309 Automatic speech recognition tuning management Apr. 8, 2014
8666734 Systems and methods for multiple pitch tracking using a multidimensional function and strength values Mar. 4, 2014
8666752 Apparatus and method for encoding and decoding multi-channel signal Mar. 4, 2014
8660842 Enhancing speech recognition using visual information Feb. 25, 2014
8655655 Sound event detecting module for a sound event recognition system and method thereof Feb. 18, 2014
8645128 Determining pitch dynamics of an audio signal Feb. 4, 2014
8620648 Audio encoding device and audio encoding method Dec. 31, 2013
8612239 Apparatus and method for coding audio data based on input signal distribution characteristics of each channel Dec. 17, 2013
8594993 Frame mapping approach for cross-lingual voice transformation Nov. 26, 2013
8577673 CELP post-processing for music signals Nov. 5, 2013
8576961 System and method for adaptive overlap and add length estimation Nov. 5, 2013
8571852 Postfilter for layered codecs Oct. 29, 2013
8566085 Preprocessing method, preprocessing apparatus and coding device Oct. 22, 2013
8566106 Method and device for fast algebraic codebook search in speech and audio coding Oct. 22, 2013
8535236 Apparatus and method for analyzing a sound signal using a physiological ear model Sep. 17, 2013
8532982 Method and apparatus to encode and decode an audio/speech signal Sep. 10, 2013
8504362 Noise reduction for speech recognition in a moving vehicle Aug. 6, 2013
8494849 Method and apparatus for transmitting speech data to a remote device in a distributed speech recognition system Jul. 23, 2013
8483672 System and method for selective monitoring of mobile communication terminals based on speech key-phrases Jul. 9, 2013
8452590 Fixed codebook searching apparatus and fixed codebook searching method May. 28, 2013
8447605 Input voice command recognition processing apparatus May. 21, 2013
8447592 Methods and apparatus for formant-based voice systems May. 21, 2013
8433581 Audio encoding device and audio encoding method Apr. 30, 2013
8433562 Speech coder that determines pulsed parameters Apr. 30, 2013
8428956 Audio encoding device and audio encoding method Apr. 23, 2013
8423356 Method of deriving a set of features for an audio input signal Apr. 16, 2013
8417516 Method and apparatus for encoding and decoding high frequency signal Apr. 9, 2013
8386245 Open-loop pitch track smoothing Feb. 26, 2013
8359196 Stereo sound decoding apparatus, stereo sound encoding apparatus and lost-frame compensating method Jan. 22, 2013
8296136 Dynamic controller for improving speech intelligibility Oct. 23, 2012
8296159 Apparatus and a method for calculating a number of spectral envelopes Oct. 23, 2012
8296155 Method and apparatus for decoding a signal Oct. 23, 2012
8271291 Method and an apparatus for identifying frame type Sep. 18, 2012
8265929 Embedded code-excited linear prediction speech coding and decoding apparatus and method Sep. 11, 2012
8255228 Efficient use of phase information in audio encoding and decoding Aug. 28, 2012
8238691 Method of and apparatus for image analysis Aug. 7, 2012
8229739 Speech processing apparatus and method Jul. 24, 2012
8219390 Pitch-based frequency domain voice removal Jul. 10, 2012
8214201 Pitch range refinement Jul. 3, 2012
8209168 Stereo decoder that conceals a lost frame in one channel using data from another channel Jun. 26, 2012
8175869 Method, apparatus, and medium for classifying speech signal and method, apparatus, and medium for encoding speech signal using the same May. 8, 2012
8165873 Speech analysis apparatus, speech analysis method and computer program Apr. 24, 2012
8155972 Seamless audio speed change based on time scale modification Apr. 10, 2012
8150683 Apparatus, method, and computer program for comparing audio signals Apr. 3, 2012
8131542 Sound source separation system which converges a separation matrix using a dynamic update amount based on a cost function Mar. 6, 2012
8131541 Two microphone noise reduction system Mar. 6, 2012
8121832 Method and apparatus for encoding and decoding high frequency signal Feb. 21, 2012
8081772 Vehicular microphone assembly using fractional power phase normalization Dec. 20, 2011
8073686 Apparatus, method and computer program product for feature extraction Dec. 6, 2011

1 2 3 4 5

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