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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
7627481 Adapting masking thresholds for encoding a low frequency transient signal in audio data Dec. 1, 2009
7627480 Support of a multichannel audio extension Dec. 1, 2009
7627469 Audio signal encoding apparatus and audio signal encoding method Dec. 1, 2009
RE41009 Audio transmission, recording and reproducing system Nov. 24, 2009
7624022 Speech compression and decompression apparatuses and methods providing scalable bandwidth structure Nov. 24, 2009
7624021 Universal container for audio data Nov. 24, 2009
7620554 Multichannel audio extension Nov. 17, 2009
7620543 Method, medium, and apparatus for converting audio data Nov. 17, 2009
7617109 Method for correcting metadata affecting the playback loudness and dynamic range of audio information Nov. 10, 2009
7613615 Circuits, systems, and methods for real-time de-shuffling of shuffled audio data Nov. 3, 2009
7613603 Audio coding device with fast algorithm for determining quantization step sizes based on psycho-acoustic model Nov. 3, 2009
7613264 Flexible sampling-rate encoder Nov. 3, 2009
7606716 Systems and methods for multi-dialog surround audio Oct. 20, 2009
7606711 Audio signal processing device, signal recovering device, audio signal processing method and signal recovering method Oct. 20, 2009
7603270 Method of prioritizing transmission of spectral components of audio signals Oct. 13, 2009
7602922 Multi-channel encoder Oct. 13, 2009
7599475 Method and apparatus for generic analytics Oct. 6, 2009
7590543 Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks Sep. 15, 2009
7587314 Single-codebook vector quantization for multiple-rate applications Sep. 8, 2009
7586937 Receiving device and method Sep. 8, 2009
7584100 Method and system for clustering using generalized sentence patterns Sep. 1, 2009
7583805 Late reverberation-based synthesis of auditory scenes Sep. 1, 2009
7580843 Synthesis subband filter process and apparatus Aug. 25, 2009
7580832 Apparatus and method for robust classification of audio signals, and method for establishing and operating an audio-signal database, as well as computer program Aug. 25, 2009
7577570 Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks Aug. 18, 2009
7567898 Regulation of volume of voice in conjunction with background sound Jul. 28, 2009
7565298 Record carrier having an encoded wide-band digital audio signal recorded thereon Jul. 21, 2009
7564978 Advanced processing based on a complex-exponential-modulated filterbank and adaptive time signalling methods Jul. 21, 2009
7562021 Modification of codewords in dictionary used for efficient coding of digital media spectral data Jul. 14, 2009
7558391 Compander architecture and methods Jul. 7, 2009
7555434 Audio decoding device, decoding method, and program Jun. 30, 2009
7552048 Method and device for performing frame erasure concealment on higher-band signal Jun. 23, 2009
7548864 Method for reduction of aliasing introduced by spectral envelope adjustment in real-valued filterbanks Jun. 16, 2009
7548853 Scalable compressed audio bit stream and codec using a hierarchical filterbank and multichannel joint coding Jun. 16, 2009
7548852 Quality of decoded audio by adding noise Jun. 16, 2009
7548790 Effective deployment of temporal noise shaping (TNS) filters Jun. 16, 2009
7546237 Bandwidth extension of narrowband speech Jun. 9, 2009
7543212 Low-density parity-check (LDPC) encoder Jun. 2, 2009
7542896 Audio coding/decoding with spatial parameters and non-uniform segmentation for transients Jun. 2, 2009
7539345 Method of processing image and audio information, image and audio processing apparatus and computer program that causes a computer to process image and audio information May. 26, 2009
7536305 Mixed lossless audio compression May. 19, 2009
7536301 System and method for implementing real-time adaptive threshold triggering in acoustic detection systems May. 19, 2009
7533022 Printed media with machine readable markings May. 12, 2009
7529941 System and method of retrieving a watermark within a signal May. 5, 2009
7529673 Spectral parameter substitution for the frame error concealment in a speech decoder May. 5, 2009
7521621 Compressed data structure and apparatus and method related thereto Apr. 21, 2009
7519530 Audio signal processing Apr. 14, 2009
7519520 Compact signal coding method and apparatus Apr. 14, 2009
7516066 Audio coding Apr. 7, 2009
7516064 Adaptive hybrid transform for signal analysis and synthesis Apr. 7, 2009

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