JP4939424B2 - 複素値のフィルタ・バンクを用いたオーディオ信号の符号化及び復号化 - Google Patents

複素値のフィルタ・バンクを用いたオーディオ信号の符号化及び復号化 Download PDF

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JP4939424B2
JP4939424B2 JP2007538599A JP2007538599A JP4939424B2 JP 4939424 B2 JP4939424 B2 JP 4939424B2 JP 2007538599 A JP2007538599 A JP 2007538599A JP 2007538599 A JP2007538599 A JP 2007538599A JP 4939424 B2 JP4939424 B2 JP 4939424B2
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subband
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band
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JP2008519290A5 (enExample
JP2008519290A (ja
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エフ ビレモエス，ラルス
ヘー ペー スハイエルス，エリク
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    • 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
    • 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
    • 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

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
JP2007538599A 2004-11-02 2005-10-31 複素値のフィルタ・バンクを用いたオーディオ信号の符号化及び復号化 Expired - Lifetime JP4939424B2 (ja)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP04105457 2004-11-02
EP04105457.8 2004-11-02
EP05108293 2005-09-09
EP05108293.1 2005-09-09
PCT/IB2005/053545 WO2006048814A1 (en) 2004-11-02 2005-10-31 Encoding and decoding of audio signals using complex-valued filter banks

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JP2008519290A JP2008519290A (ja) 2008-06-05
JP2008519290A5 JP2008519290A5 (enExample) 2008-07-17
JP4939424B2 true JP4939424B2 (ja) 2012-05-23

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US (1) US8255231B2 (enExample)
EP (1) EP1810281B1 (enExample)
JP (1) JP4939424B2 (enExample)
KR (1) KR101187597B1 (enExample)
CN (2) CN102148035B (enExample)
BR (1) BRPI0517234B1 (enExample)
ES (1) ES2791001T3 (enExample)
MX (1) MX2007005103A (enExample)
PL (1) PL1810281T3 (enExample)
RU (1) RU2407069C2 (enExample)
WO (1) WO2006048814A1 (enExample)

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JP5552988B2 (ja) * 2010-09-27 2014-07-16 富士通株式会社 音声帯域拡張装置および音声帯域拡張方法
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Publication number Publication date
KR101187597B1 (ko) 2012-10-12
BRPI0517234A (pt) 2008-10-07
JP2008519290A (ja) 2008-06-05
CN102148035A (zh) 2011-08-10
CN101053019A (zh) 2007-10-10
MX2007005103A (es) 2007-07-04
KR20070085681A (ko) 2007-08-27
EP1810281A1 (en) 2007-07-25
ES2791001T3 (es) 2020-10-30
PL1810281T3 (pl) 2020-07-27
RU2007120591A (ru) 2008-12-10
WO2006048814A1 (en) 2006-05-11
CN102148035B (zh) 2014-06-18
BRPI0517234B1 (pt) 2019-07-02
CN101053019B (zh) 2012-01-25
RU2407069C2 (ru) 2010-12-20
US20090063140A1 (en) 2009-03-05
EP1810281B1 (en) 2020-02-26
US8255231B2 (en) 2012-08-28

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