WO2008120440A1 - 符号化装置および符号化方法 - Google Patents

符号化装置および符号化方法 Download PDF

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Publication number
WO2008120440A1
WO2008120440A1 PCT/JP2008/000408 JP2008000408W WO2008120440A1 WO 2008120440 A1 WO2008120440 A1 WO 2008120440A1 JP 2008000408 W JP2008000408 W JP 2008000408W WO 2008120440 A1 WO2008120440 A1 WO 2008120440A1
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WIPO (PCT)
Prior art keywords
gain
sub
encoded information
encoding
shape
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PCT/JP2008/000408
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English (en)
French (fr)
Inventor
Masahiro Oshikiri
Toshiyuki Morii
Tomofumi Yamanashi
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Panasonic Corporation
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Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Priority to US12/528,659 priority Critical patent/US8554549B2/en
Priority to EP08710511.0A priority patent/EP2128857B1/en
Priority to AU2008233888A priority patent/AU2008233888B2/en
Priority to CN200880006787.5A priority patent/CN101622662B/zh
Priority to KR1020097018303A priority patent/KR101414354B1/ko
Priority to BRPI0808428A priority patent/BRPI0808428A8/pt
Priority to RU2009132934/08A priority patent/RU2471252C2/ru
Publication of WO2008120440A1 publication Critical patent/WO2008120440A1/ja
Priority to US13/965,634 priority patent/US8918314B2/en
Priority to US13/965,644 priority patent/US8918315B2/en

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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
    • 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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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
    • G10L19/0208—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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G10L19/038—Vector quantisation, e.g. TwinVQ audio
    • 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
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • 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
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (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)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

　母音のようにトーナリティが強い信号のスペクトルの形状をより正確に符号化することができる音声符号化装置などを提供する。この装置において、サブバンド構成部（１５１）は、符号化対象となる第１レイヤ誤差変換係数をＭ個のサブバンドに分割しＭ個のサブバンド変換係数を生成し、形状ベクトル符号化部（１５２）は、Ｍ個のサブバンド変換係数それぞれに対し符号化を行ってＭ個の形状符号化情報を得るとともに、Ｍ個のサブバンド変換係数それぞれのターゲットゲインを算出し、ゲインベクトル構成部（１５３）は、Ｍ個のターゲットゲインを用いて１つのゲインベクトルを構成し、ゲインベクトル符号化部（１５４）は、ゲインベクトルに対し符号化を行ってゲイン符号化情報を得、多重化部（１５５）は、形状符号化情報とゲイン符号化情報とを多重化する。
PCT/JP2008/000408 2007-03-02 2008-02-29 符号化装置および符号化方法 WO2008120440A1 (ja)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US12/528,659 US8554549B2 (en) 2007-03-02 2008-02-29 Encoding device and method including encoding of error transform coefficients
EP08710511.0A EP2128857B1 (en) 2007-03-02 2008-02-29 Encoding device and encoding method
AU2008233888A AU2008233888B2 (en) 2007-03-02 2008-02-29 Encoding device and encoding method
CN200880006787.5A CN101622662B (zh) 2007-03-02 2008-02-29 编码装置和编码方法
KR1020097018303A KR101414354B1 (ko) 2007-03-02 2008-02-29 부호화 장치 및 부호화 방법
BRPI0808428A BRPI0808428A8 (pt) 2007-03-02 2008-02-29 Dispostivo de codificação e método de codificação
RU2009132934/08A RU2471252C2 (ru) 2007-03-02 2008-02-29 Устройство кодирования и способ кодирования
US13/965,634 US8918314B2 (en) 2007-03-02 2013-08-13 Encoding apparatus, decoding apparatus, encoding method and decoding method
US13/965,644 US8918315B2 (en) 2007-03-02 2013-08-13 Encoding apparatus, decoding apparatus, encoding method and decoding method

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
JP2007053502 2007-03-02
JP2007-053502 2007-03-02
JP2007133545 2007-05-18
JP2007-133545 2007-05-18
JP2007-185077 2007-07-13
JP2007185077 2007-07-13
JP2008045259A JP4871894B2 (ja) 2007-03-02 2008-02-26 符号化装置、復号装置、符号化方法および復号方法
JP2008-045259 2008-02-26

Related Child Applications (3)

Application Number Title Priority Date Filing Date
US12/528,659 A-371-Of-International US8554549B2 (en) 2007-03-02 2008-02-29 Encoding device and method including encoding of error transform coefficients
US13/965,634 Continuation US8918314B2 (en) 2007-03-02 2013-08-13 Encoding apparatus, decoding apparatus, encoding method and decoding method
US13/965,644 Continuation US8918315B2 (en) 2007-03-02 2013-08-13 Encoding apparatus, decoding apparatus, encoding method and decoding method

Publications (1)

Publication Number Publication Date
WO2008120440A1 true WO2008120440A1 (ja) 2008-10-09

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Country Status (11)

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US (3) US8554549B2 (ja)
EP (1) EP2128857B1 (ja)
JP (1) JP4871894B2 (ja)
KR (1) KR101414354B1 (ja)
CN (3) CN102411933B (ja)
AU (1) AU2008233888B2 (ja)
BR (1) BRPI0808428A8 (ja)
MY (1) MY147075A (ja)
RU (3) RU2471252C2 (ja)
SG (2) SG178727A1 (ja)
WO (1) WO2008120440A1 (ja)

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