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Class Information
Number: 704/500
Name: Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression > Audio signal bandwidth compression or expansion
Description: Subject matter where there is either an expansion or reduction of the bandwidth required for transmission of a sound signal.

Sub-classes under this class:

Class Number Class Name Patents
704/502 Delay line 165
704/501 With content reduction encoding 588

Patents under this class:

Patent Number Title Of Patent Date Issued
8645144 Audio signal shaping for playback by audio devices Feb. 4, 2014
8645127 Efficient coding of digital media spectral data using wide-sense perceptual similarity Feb. 4, 2014
8645126 Apparatus and method of encoding and decoding signals Feb. 4, 2014
8639519 Method and apparatus for selective signal coding based on core encoder performance Jan. 28, 2014
8639498 Apparatus and method for coding and decoding multi object audio signal with multi channel Jan. 28, 2014
8639371 Self-configuring media devices and methods Jan. 28, 2014
8638951 Electronic apparatus for generating modified wideband audio signals based on two or more wideband microphone signals Jan. 28, 2014
8638945 Apparatus and method for encoding/decoding signal Jan. 28, 2014
8638851 Joint bandwidth detection algorithm for real-time communication Jan. 28, 2014
8634577 Audio decoder Jan. 21, 2014
8630862 Audio signal encoder/decoder for use in low delay applications, selectively providing aliasing cancellation information while selectively switching between transform coding and celp coding of Jan. 14, 2014
8630861 Mixed lossless audio compression Jan. 14, 2014
8630848 Audio signal transient detection Jan. 14, 2014
8626518 Multi-channel signal encoding and decoding method, apparatus, and system Jan. 7, 2014
8626517 Simultaneous time-domain and frequency-domain noise shaping for TDAC transforms Jan. 7, 2014
8626516 Method and system for dynamic range control in an audio processing system Jan. 7, 2014
8626515 Apparatus for processing media signal and method thereof Jan. 7, 2014
8626503 Audio encoding and decoding Jan. 7, 2014
8626501 Encoding apparatus, encoding method, decoding apparatus, decoding method, and program Jan. 7, 2014
8626494 Data compression format Jan. 7, 2014
8620674 Multi-channel audio encoding and decoding Dec. 31, 2013
8620673 Audio decoding method and audio decoder Dec. 31, 2013
8620672 Systems, methods, apparatus, and computer-readable media for phase-based processing of multichannel signal Dec. 31, 2013
8620671 Method and apparatus for transforming between different filter bank domains Dec. 31, 2013
8620651 Bit error concealment methods for speech coding Dec. 31, 2013
8620648 Audio encoding device and audio encoding method Dec. 31, 2013
8615398 Audio coding selection based on device operating condition Dec. 24, 2013
8612241 Method and apparatus for performing packet loss or frame erasure concealment Dec. 17, 2013
8612240 Audio encoder, audio decoder, method for encoding an audio information, method for decoding an audio information and computer program using a region-dependent arithmetic coding mapping rule Dec. 17, 2013
8612239 Apparatus and method for coding audio data based on input signal distribution characteristics of each channel Dec. 17, 2013
8612238 Apparatus and method for encoding/decoding signal Dec. 17, 2013
8612237 Method and apparatus for determining audio spatial quality Dec. 17, 2013
8612236 Method and device for noise suppression in a decoded audio signal Dec. 17, 2013
8612215 Method and apparatus to extract important frequency component of audio signal and method and apparatus to encode and/or decode audio signal using the same Dec. 17, 2013
8612214 Apparatus and a method for generating bandwidth extension output data Dec. 17, 2013
8606587 Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks Dec. 10, 2013
8606586 Bandwidth extension encoder for encoding an audio signal using a window controller Dec. 10, 2013
8606571 Spatial selectivity noise reduction tradeoff for multi-microphone systems Dec. 10, 2013
8605912 Biphase mark code decoder and method of operation Dec. 10, 2013
8600765 Signal classification method and device, and encoding and decoding methods and devices Dec. 3, 2013
8600764 Determining an initial common scale factor for audio encoding based upon spectral differences between frames Dec. 3, 2013
8600737 Systems, methods, apparatus, and computer program products for wideband speech coding Dec. 3, 2013
8595018 Technique for controlling codec selection along a complex call path Nov. 26, 2013
8595017 Audio encoding method and device Nov. 26, 2013
8595009 Method and apparatus for performing song detection on audio signal Nov. 26, 2013
8595007 Voice print recognition software system for voice identification and matching Nov. 26, 2013
8589634 Processor extensions for accelerating spectral band replication Nov. 19, 2013
8589173 Method and apparatus for encoding/decoding speech signal using coding mode Nov. 19, 2013
8589166 Speech content based packet loss concealment Nov. 19, 2013
RE44600 Encoding device and decoding device Nov. 12, 2013

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