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Class Information
Number: 704/204
Name: Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression > Speech signal processing > For storage or transmission > Transformation > Orthogonal functions
Description: Subject matter wherein the function is orthogonal (transformations as applied to vector, matrix, linear and polynomial functions, for example).

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8682658 Audio equipment including means for de-noising a speech signal by fractional delay filtering, in particular for a "hands-free" telephony system Mar. 25, 2014
8615391 Method and apparatus to extract important spectral component from audio signal and low bit-rate audio signal coding and/or decoding method and apparatus using the same Dec. 24, 2013
8606573 Voice recognition improved accuracy in mobile environments Dec. 10, 2013
8577045 Apparatus and method for encoding a multi-channel audio signal Nov. 5, 2013
8494845 Signal distortion elimination apparatus, method, program, and recording medium having the program recorded thereon Jul. 23, 2013
8452588 Encoding device, decoding device, and method thereof May. 28, 2013
8452587 Encoder, decoder, and the methods therefor May. 28, 2013
8447591 Factorization of overlapping tranforms into two block transforms May. 21, 2013
8447023 Automatic audio priority designation during conference May. 21, 2013
8412518 Time warped modified transform coding of audio signals Apr. 2, 2013
8396230 Speech enhancement device and method for the same Mar. 12, 2013
8392200 Low complexity spectral band replication (SBR) filterbanks Mar. 5, 2013
8340943 Method and system for separating musical sound source Dec. 25, 2012
8326606 Sound encoding device and sound encoding method Dec. 4, 2012
8214200 Fast MDCT (modified discrete cosine transform) approximation of a windowed sinusoid Jul. 3, 2012
8086465 Transform domain transcoding and decoding of audio data using integer-reversible modulated lapped transforms Dec. 27, 2011
8078458 Packet loss concealment for sub-band predictive coding based on extrapolation of sub-band audio waveforms Dec. 13, 2011
8046217 Geometric calculation of absolute phases for parametric stereo decoding Oct. 25, 2011
7996212 Device, method and computer program for analyzing an audio signal Aug. 9, 2011
7991622 Audio compression and decompression using integer-reversible modulated lapped transforms Aug. 2, 2011
7869994 Transient noise removal system using wavelets Jan. 11, 2011
7856353 Method for processing speech signal data with reverberation filtering Dec. 21, 2010
7814338 System and method for virtual tape management with creation and management options Oct. 12, 2010
7720677 Time warped modified transform coding of audio signals May. 18, 2010
7698143 Constructing broad-band acoustic signals from lower-band acoustic signals Apr. 13, 2010
7693707 Voice/musical sound encoding device and voice/musical sound encoding method Apr. 6, 2010
7672834 Method and system for detecting and temporally relating components in non-stationary signals Mar. 2, 2010
7669024 Storage system with multiple copy targeting Feb. 23, 2010
7509255 Apparatuses for adaptively controlling processing of speech signal and adaptively communicating speech in accordance with conditions of transmitting apparatus side and radio wave and methods t Mar. 24, 2009
7415392 System for separating multiple sound sources from monophonic input with non-negative matrix factor deconvolution Aug. 19, 2008
7395078 Voice over short message service Jul. 1, 2008
7386695 Storage system with multiple copy targeting Jun. 10, 2008
7360048 Storage system with multiple copy targeting and disk failure protection Apr. 15, 2008
7343284 Method and system for speech processing for enhancement and detection Mar. 11, 2008
7266781 Method and apparatus for generating a graphical display report Sep. 4, 2007
7205910 Signal encoding apparatus and signal encoding method, and signal decoding apparatus and signal decoding method Apr. 17, 2007
7062430 Designing boundary filters for a biorthogonal filter bank Jun. 13, 2006
7062445 Quantization loop with heuristic approach Jun. 13, 2006
7050980 System and method for compressed domain beat detection in audio bitstreams May. 23, 2006
7006787 Mobile to mobile digital wireless connection having enhanced voice quality Feb. 28, 2006
6883015 Apparatus and method for providing server state and attribute management for multiple-threaded voice enabled web applications Apr. 19, 2005
6873955 Method and apparatus for recording/reproducing or producing a waveform using time position information Mar. 29, 2005
6826528 Weighted frequency-channel background noise suppressor Nov. 30, 2004
6801666 Device and method for transforming a digital signal Oct. 5, 2004
6741666 Device and method for transforming a digital signal May. 25, 2004
6714907 Codebook structure and search for speech coding Mar. 30, 2004
6681204 Apparatus and method for encoding a signal as well as apparatus and method for decoding a signal Jan. 20, 2004
6636830 System and method for noise reduction using bi-orthogonal modified discrete cosine transform Oct. 21, 2003
6604069 Signals having quantized values and variable length codes Aug. 5, 2003
6587816 Fast frequency-domain pitch estimation Jul. 1, 2003

1 2 3

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