WO2009047911A1 - ベクトル量子化装置、ベクトル逆量子化装置、およびこれらの方法 - Google Patents

ベクトル量子化装置、ベクトル逆量子化装置、およびこれらの方法 Download PDF

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Publication number
WO2009047911A1
WO2009047911A1 PCT/JP2008/002876 JP2008002876W WO2009047911A1 WO 2009047911 A1 WO2009047911 A1 WO 2009047911A1 JP 2008002876 W JP2008002876 W JP 2008002876W WO 2009047911 A1 WO2009047911 A1 WO 2009047911A1
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WO
WIPO (PCT)
Prior art keywords
vector
quantization
quantizer
codebook
stage
Prior art date
Application number
PCT/JP2008/002876
Other languages
English (en)
French (fr)
Inventor
Kaoru Satoh
Toshiyuki Morii
Hiroyuki Ehara
Original Assignee
Panasonic Corporation
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 Panasonic Corporation filed Critical Panasonic Corporation
Priority to RU2010114237/08A priority Critical patent/RU2469421C2/ru
Priority to EP08836910.3A priority patent/EP2202727B1/en
Priority to JP2009536932A priority patent/JP5300733B2/ja
Priority to CN200880110748XA priority patent/CN101821800B/zh
Priority to US12/682,086 priority patent/US8438020B2/en
Priority to KR1020107007679A priority patent/KR101390051B1/ko
Priority to CA2701757A priority patent/CA2701757C/en
Priority to BRPI0818062 priority patent/BRPI0818062A2/pt
Publication of WO2009047911A1 publication Critical patent/WO2009047911A1/ja

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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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • 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
    • G10L19/04—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 predictive techniques
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G10L19/07—Line spectrum pair [LSP] 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
    • G10L19/04—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 predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
    • G10L2019/0005—Multi-stage vector quantisation

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  • Engineering & Computer Science (AREA)
  • 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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

　量子化対象ベクトルとの相関を有する特徴の種類によって１段目のベクトル量子化のコードブックを切り替える際に、ベクトル量子化精度を向上するベクトル量子化装置。このベクトル量子化装置では、分類器（１０１）は、複数の種類のうち、広帯域ＬＳＰ（Line Spectral Pairs）との相関を有する狭帯域ＬＳＰベクトルの種類を表す分類情報を生成し、第１コードブック（１０３）は、狭帯域ＬＳＰベクトルの複数の種類それぞれに対応する複数のサブコードブック（ＣＢａ１～ＣＢａｎ）の中から、分類情報に対応する１つのサブコードブックを１段目の量子化に用いるコードブックとして選択し、乗算器（１０７）は、スケーリング因子決定部（１０６）に格納されている複数のスケーリング因子のうち、分類情報に対応するスケーリング因子を、加算器（１０４）から入力される１段目の量子化残差ベクトルに乗じ、２段目の量子化対象として加算器（１０９）に出力する。
PCT/JP2008/002876 2007-10-12 2008-10-10 ベクトル量子化装置、ベクトル逆量子化装置、およびこれらの方法 WO2009047911A1 (ja)

Priority Applications (8)

Application Number Priority Date Filing Date Title
RU2010114237/08A RU2469421C2 (ru) 2007-10-12 2008-10-10 Векторный квантователь, инверсный векторный квантователь и способы
EP08836910.3A EP2202727B1 (en) 2007-10-12 2008-10-10 Vector quantizer, vector inverse quantizer, and the methods
JP2009536932A JP5300733B2 (ja) 2007-10-12 2008-10-10 ベクトル量子化装置、ベクトル逆量子化装置、およびこれらの方法
CN200880110748XA CN101821800B (zh) 2007-10-12 2008-10-10 矢量量化装置、矢量反量化装置和其方法
US12/682,086 US8438020B2 (en) 2007-10-12 2008-10-10 Vector quantization apparatus, vector dequantization apparatus, and the methods
KR1020107007679A KR101390051B1 (ko) 2007-10-12 2008-10-10 벡터 양자화 장치, 벡터 역양자화 장치, 및 이러한 방법
CA2701757A CA2701757C (en) 2007-10-12 2008-10-10 Vector quantization apparatus, vector dequantization apparatus and the methods
BRPI0818062 BRPI0818062A2 (pt) 2007-10-12 2008-10-10 Quantizador vetorial, quantizador vetorial inverso, e métodos

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007266922 2007-10-12
JP2007-266922 2007-10-12
JP2007-285602 2007-11-01
JP2007285602 2007-11-01

Publications (1)

Publication Number Publication Date
WO2009047911A1 true WO2009047911A1 (ja) 2009-04-16

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PCT/JP2008/002876 WO2009047911A1 (ja) 2007-10-12 2008-10-10 ベクトル量子化装置、ベクトル逆量子化装置、およびこれらの方法

Country Status (10)

Country Link
US (1) US8438020B2 (ja)
EP (1) EP2202727B1 (ja)
JP (1) JP5300733B2 (ja)
KR (1) KR101390051B1 (ja)
CN (1) CN101821800B (ja)
BR (1) BRPI0818062A2 (ja)
CA (1) CA2701757C (ja)
MY (1) MY152348A (ja)
RU (1) RU2469421C2 (ja)
WO (1) WO2009047911A1 (ja)

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JP2011009869A (ja) * 2009-06-23 2011-01-13 Nippon Telegr & Teleph Corp <Ntt> 符号化方法、復号方法、符号化器、復号器およびプログラム
JP2011009860A (ja) * 2009-06-23 2011-01-13 Nippon Telegr & Teleph Corp <Ntt> 符号化方法、復号方法、符号化器、復号器、プログラム
JP2011009861A (ja) * 2009-06-23 2011-01-13 Nippon Telegr & Teleph Corp <Ntt> 符号化方法、復号方法、符号化器、復号器、プログラム

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CN101335004B (zh) * 2007-11-02 2010-04-21 华为技术有限公司 一种多级量化的方法及装置
CN101911185B (zh) * 2008-01-16 2013-04-03 松下电器产业株式会社 矢量量化装置、矢量反量化装置及其方法
PL2727106T3 (pl) * 2011-07-01 2020-03-31 Nokia Technologies Oy Wieloskalowe wyszukiwanie w książce kodów
RU2726158C2 (ru) 2012-03-29 2020-07-09 Телефонактиеболагет Лм Эрикссон (Пабл) Векторный квантователь
ES2820537T3 (es) * 2012-07-12 2021-04-21 Nokia Technologies Oy Cuantificación vectorial
CA2991341A1 (en) 2015-07-06 2017-01-12 Nokia Technologies Oy Bit error detector for an audio signal decoder

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JP2011009861A (ja) * 2009-06-23 2011-01-13 Nippon Telegr & Teleph Corp <Ntt> 符号化方法、復号方法、符号化器、復号器、プログラム

Also Published As

Publication number Publication date
EP2202727B1 (en) 2018-01-10
EP2202727A4 (en) 2012-08-22
CA2701757A1 (en) 2009-04-16
RU2469421C2 (ru) 2012-12-10
CN101821800B (zh) 2012-09-26
JP5300733B2 (ja) 2013-09-25
KR101390051B1 (ko) 2014-04-29
US20100211398A1 (en) 2010-08-19
RU2010114237A (ru) 2011-10-20
CA2701757C (en) 2016-11-22
KR20100085908A (ko) 2010-07-29
BRPI0818062A2 (pt) 2015-03-31
JPWO2009047911A1 (ja) 2011-02-17
US8438020B2 (en) 2013-05-07
EP2202727A1 (en) 2010-06-30
MY152348A (en) 2014-09-15
CN101821800A (zh) 2010-09-01

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