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Class Information
Number: 704/218
Name: Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression > Speech signal processing > For storage or transmission > Time > Correlation function > Cross-correlation
Description: Subject matter wherein the relationships are between speech










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8666752 Apparatus and method for encoding and decoding multi-channel signal Mar. 4, 2014
8660842 Enhancing speech recognition using visual information Feb. 25, 2014
8645128 Determining pitch dynamics of an audio signal Feb. 4, 2014
8626497 Automatic marking method for karaoke vocal accompaniment Jan. 7, 2014
8620646 System and method for tracking sound pitch across an audio signal using harmonic envelope Dec. 31, 2013
8577045 Apparatus and method for encoding a multi-channel audio signal Nov. 5, 2013
8576961 System and method for adaptive overlap and add length estimation Nov. 5, 2013
8566084 Speech processing based on time series of maximum values of cross-power spectrum phase between two consecutive speech frames Oct. 22, 2013
8566085 Preprocessing method, preprocessing apparatus and coding device Oct. 22, 2013
8548803 System and method of processing a sound signal including transforming the sound signal into a frequency-chirp domain Oct. 1, 2013
8538746 Apparatus and method of providing a quality measure for an output voice signal generated to reproduce an input voice signal Sep. 17, 2013
8478587 Voice analysis device, voice analysis method, voice analysis program, and system integration circuit Jul. 2, 2013
8423356 Method of deriving a set of features for an audio input signal Apr. 16, 2013
8391373 Concealment of transmission error in a digital audio signal in a hierarchical decoding structure Mar. 5, 2013
8374883 Encoder and decoder using inter channel prediction based on optimally determined signals Feb. 12, 2013
8346546 Packet loss concealment based on forced waveform alignment after packet loss Jan. 1, 2013
8296131 Method and apparatus of providing a quality measure for an output voice signal generated to reproduce an input voice signal Oct. 23, 2012
8296159 Apparatus and a method for calculating a number of spectral envelopes Oct. 23, 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
8233576 System, apparatus, and method for a robust synchronization scheme for digital communication systems Jul. 31, 2012
8229739 Speech processing apparatus and method Jul. 24, 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
8150702 Stereo audio encoding device, stereo audio decoding device, and method thereof Apr. 3, 2012
8145477 Systems, methods, and apparatus for computationally efficient, iterative alignment of speech waveforms Mar. 27, 2012
8131541 Two microphone noise reduction system Mar. 6, 2012
8131542 Sound source separation system which converges a separation matrix using a dynamic update amount based on a cost function Mar. 6, 2012
8078456 Audio time scale modification algorithm for dynamic playback speed control Dec. 13, 2011
8073686 Apparatus, method and computer program product for feature extraction Dec. 6, 2011
8069038 System for bandwidth extension of narrow-band speech Nov. 29, 2011
8010350 Decimated bisectional pitch refinement Aug. 30, 2011
8010356 Parameter learning in a hidden trajectory model Aug. 30, 2011
7933767 Systems and methods for determining pitch lag for a current frame of information Apr. 26, 2011
7933366 Channel estimation method and system using linear correlation based interference cancellation (LCIC) combined with decision-feedback-equalization (DFE) Apr. 26, 2011
7756715 Apparatus, method, and medium for processing audio signal using correlation between bands Jul. 13, 2010
7711553 Methods and apparatus for blind separation of multichannel convolutive mixtures in the frequency domain May. 4, 2010
7680657 Auto segmentation based partitioning and clustering approach to robust endpointing Mar. 16, 2010
7653537 Method and system for detecting voice activity based on cross-correlation Jan. 26, 2010
7630883 Apparatus and method for creating pitch wave signals and apparatus and method compressing, expanding and synthesizing speech signals using these pitch wave signals Dec. 8, 2009
7613604 System for bandwidth extension of narrow-band speech Nov. 3, 2009
7596488 System and method for real-time jitter control and packet-loss concealment in an audio signal Sep. 29, 2009
7593847 Pitch detection method and apparatus Sep. 22, 2009
7580833 Constant pitch variable speed audio decoding Aug. 25, 2009
7542896 Audio coding/decoding with spatial parameters and non-uniform segmentation for transients Jun. 2, 2009
7411985 Low-complexity packet loss concealment method for voice-over-IP speech transmission Aug. 12, 2008

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