ATE499678T1 - Schnelle spektrale partitionierung zur effizienten codierung - Google Patents

Schnelle spektrale partitionierung zur effizienten codierung

Info

Publication number
ATE499678T1
ATE499678T1 AT08788772T AT08788772T ATE499678T1 AT E499678 T1 ATE499678 T1 AT E499678T1 AT 08788772 T AT08788772 T AT 08788772T AT 08788772 T AT08788772 T AT 08788772T AT E499678 T1 ATE499678 T1 AT E499678T1
Authority
AT
Austria
Prior art keywords
estimates
sub
efficient coding
bit requirements
spectral partitioning
Prior art date
Application number
AT08788772T
Other languages
English (en)
Inventor
David Hargreaves
Esfandiar Zavarehei
Original Assignee
Cambridge Silicon Radio Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cambridge Silicon Radio Ltd filed Critical Cambridge Silicon Radio Ltd
Application granted granted Critical
Publication of ATE499678T1 publication Critical patent/ATE499678T1/de

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/002—Dynamic bit allocation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Optical Measuring Cells (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Glass Compositions (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
AT08788772T 2007-10-30 2008-09-09 Schnelle spektrale partitionierung zur effizienten codierung ATE499678T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0721257A GB2454190A (en) 2007-10-30 2007-10-30 Minimising a cost function in encoding data using spectral partitioning
PCT/GB2008/050803 WO2009056866A1 (en) 2007-10-30 2008-09-09 Fast spectral partitioning for efficient encoding

Publications (1)

Publication Number Publication Date
ATE499678T1 true ATE499678T1 (de) 2011-03-15

Family

ID=38830181

Family Applications (1)

Application Number Title Priority Date Filing Date
AT08788772T ATE499678T1 (de) 2007-10-30 2008-09-09 Schnelle spektrale partitionierung zur effizienten codierung

Country Status (7)

Country Link
US (1) US8332217B2 (de)
EP (1) EP2203917B1 (de)
JP (1) JP2011501246A (de)
AT (1) ATE499678T1 (de)
DE (1) DE602008005180D1 (de)
GB (1) GB2454190A (de)
WO (1) WO2009056866A1 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8204744B2 (en) * 2008-12-01 2012-06-19 Research In Motion Limited Optimization of MP3 audio encoding by scale factors and global quantization step size
JP5304504B2 (ja) * 2009-07-17 2013-10-02 ソニー株式会社 信号符号化装置、信号復号装置、信号処理システム、これらにおける処理方法およびプログラム
CN103544957B (zh) 2012-07-13 2017-04-12 华为技术有限公司 音频信号的比特分配的方法和装置
CN103778918B (zh) 2012-10-26 2016-09-07 华为技术有限公司 音频信号的比特分配的方法和装置
CN105976824B (zh) * 2012-12-06 2021-06-08 华为技术有限公司 信号解码的方法和设备
US10699721B2 (en) * 2017-04-25 2020-06-30 Dts, Inc. Encoding and decoding of digital audio signals using difference data

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5285498A (en) * 1992-03-02 1994-02-08 At&T Bell Laboratories Method and apparatus for coding audio signals based on perceptual model
US5884269A (en) * 1995-04-17 1999-03-16 Merging Technologies Lossless compression/decompression of digital audio data
EP0756386B1 (de) * 1995-07-27 2003-09-17 Victor Company Of Japan, Limited Verfahren und Gerät zum Kodieren digitaler akustischer Signale
KR100548891B1 (ko) * 1998-06-15 2006-02-02 마츠시타 덴끼 산교 가부시키가이샤 음성 부호화 장치 및 음성 부호화 방법
JP3784993B2 (ja) * 1998-06-26 2006-06-14 株式会社リコー 音響信号の符号化・量子化方法
JP3580777B2 (ja) * 1998-12-28 2004-10-27 フラウンホーファー−ゲゼルシャフト・ツール・フェルデルング・デル・アンゲヴァンテン・フォルシュング・アインゲトラーゲネル・フェライン オーディオ信号又はビットストリームの符号化又は復号化のための方法及び装置
JP2001188563A (ja) * 2000-01-05 2001-07-10 Matsushita Electric Ind Co Ltd オーディオ符号化のための効果的なセクション化法
US6601032B1 (en) * 2000-06-14 2003-07-29 Intervideo, Inc. Fast code length search method for MPEG audio encoding
JP2002006895A (ja) * 2000-06-20 2002-01-11 Fujitsu Ltd ビット割当装置および方法
WO2003077235A1 (en) * 2002-03-12 2003-09-18 Nokia Corporation Efficient improvements in scalable audio coding
US7272566B2 (en) * 2003-01-02 2007-09-18 Dolby Laboratories Licensing Corporation Reducing scale factor transmission cost for MPEG-2 advanced audio coding (AAC) using a lattice based post processing technique
US7562021B2 (en) * 2005-07-15 2009-07-14 Microsoft Corporation Modification of codewords in dictionary used for efficient coding of digital media spectral data
US7761290B2 (en) * 2007-06-15 2010-07-20 Microsoft Corporation Flexible frequency and time partitioning in perceptual transform coding of audio

Also Published As

Publication number Publication date
US8332217B2 (en) 2012-12-11
WO2009056866A1 (en) 2009-05-07
JP2011501246A (ja) 2011-01-06
EP2203917A1 (de) 2010-07-07
DE602008005180D1 (de) 2011-04-07
GB0721257D0 (en) 2007-12-05
GB2454190A (en) 2009-05-06
US20100202558A1 (en) 2010-08-12
EP2203917B1 (de) 2011-02-23

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