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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:
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Patent Number Title Of Patent Date Issued
8149144 Hybrid arithmetic-combinatorial encoder Apr. 3, 2012
8145498 Device and method for generating a coded multi-channel signal and device and method for decoding a coded multi-channel signal Mar. 27, 2012
8145492 Robot behavior control system and method, and robot apparatus Mar. 27, 2012
8145479 Improving the quality of output audio signal,transferred as coded speech to subscriber's terminal over a network, by speech coder and decoder tandem pre-processing Mar. 27, 2012
8145475 Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks Mar. 27, 2012
8140343 Method, device and system for signal encoding and decoding Mar. 20, 2012
8140342 Selective scaling mask computation based on peak detection Mar. 20, 2012
8140331 Feature extraction for identification and classification of audio signals Mar. 20, 2012
8139880 Lifting-based directional lapped transforms Mar. 20, 2012
8139773 Method and an apparatus for decoding an audio signal Mar. 20, 2012
8135588 Transform coder and transform coding method Mar. 13, 2012
8127302 Method for dynamically adjusting audio decoding process Feb. 28, 2012
8121850 Encoding apparatus and encoding method Feb. 21, 2012
8121849 Content filtering for a digital audio signal Feb. 21, 2012
8121848 Bases dictionary for low complexity matching pursuits data coding and decoding Feb. 21, 2012
8121847 Communication terminal with a parameterised bandwidth expansion, and method for the bandwidth expansion thereof Feb. 21, 2012
8121836 Apparatus and method of processing an audio signal Feb. 21, 2012
8121831 Method, apparatus, and medium for bandwidth extension encoding and decoding Feb. 21, 2012
8121830 Methods and apparatus to extract data encoded in media content Feb. 21, 2012
8117038 Universal container for audio data Feb. 14, 2012
8117029 Method and apparatus for matching sound quality measurement sections of variable bandwidth multi-codec Feb. 14, 2012
8117028 Method and device for code conversion between audio encoding/decoding methods and storage medium thereof Feb. 14, 2012
8116936 Method and system for efficient data collection and storage Feb. 14, 2012
8116460 Efficient and scalable parametric stereo coding for low bitrate audio coding applications Feb. 14, 2012
8112285 Method and system for improving real-time data communications Feb. 7, 2012
8112284 Methods and apparatus for improving high frequency reconstruction of audio and speech signals Feb. 7, 2012
8108222 Encoding device and decoding device Jan. 31, 2012
8108221 Mixed lossless audio compression Jan. 31, 2012
8108220 Techniques for accommodating primary content (pure voice) audio and secondary content remaining audio capability in the digital audio production process Jan. 31, 2012
8108219 Apparatus and method of encoding and decoding audio signal Jan. 31, 2012
8108209 Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks Jan. 31, 2012
8103515 Signal classification processing method, classification processing device, and encoding system Jan. 24, 2012
8103514 Slot position coding of OTT syntax of spatial audio coding application Jan. 24, 2012
8103513 Slot position coding of syntax of spatial audio application Jan. 24, 2012
8103512 Method and system for aligning windows to extract peak feature from a voice signal Jan. 24, 2012
8099293 Audio signal processing Jan. 17, 2012
8099292 Multi-channel audio encoding and decoding Jan. 17, 2012
8099291 Signal decoding apparatus Jan. 17, 2012
8095375 Universal container for audio data Jan. 10, 2012
8095374 Method and apparatus for improving the quality of speech signals Jan. 10, 2012
8090588 System and method for providing AMR-WB DTX synchronization Jan. 3, 2012
8090587 Method and apparatus for encoding/decoding multi-channel audio signal Jan. 3, 2012
8090586 Method and apparatus for embedding spatial information and reproducing embedded signal for an audio signal Jan. 3, 2012
8090585 Audio decoding device Jan. 3, 2012
8090574 Entropy encoding and decoding using direct level and run-length/level context-adaptive arithmetic coding/decoding modes Jan. 3, 2012
8086446 Method and apparatus for non-overlapped transforming of an audio signal, method and apparatus for adaptively encoding audio signal with the transforming, method and apparatus for inverse non-o Dec. 27, 2011
8082438 Systems and methods for booting a codec processor over a high definition audio bus Dec. 20, 2011
8082158 Time slot position coding of multiple frame types Dec. 20, 2011
8082157 Apparatus for encoding and decoding audio signal and method thereof Dec. 20, 2011
8082156 Audio encoding device, audio encoding method, and audio encoding program for encoding a wide-band audio signal Dec. 20, 2011

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