WO2008132850A1 - ステレオ音声符号化装置、ステレオ音声復号装置、およびこれらの方法 - Google Patents

ステレオ音声符号化装置、ステレオ音声復号装置、およびこれらの方法 Download PDF

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Publication number
WO2008132850A1
WO2008132850A1 PCT/JP2008/001080 JP2008001080W WO2008132850A1 WO 2008132850 A1 WO2008132850 A1 WO 2008132850A1 JP 2008001080 W JP2008001080 W JP 2008001080W WO 2008132850 A1 WO2008132850 A1 WO 2008132850A1
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WO
WIPO (PCT)
Prior art keywords
stereo audio
channel
signals
frequency bands
signal
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PCT/JP2008/001080
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English (en)
French (fr)
Inventor
Kok Seng Chong
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.)
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Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Priority to JP2009511690A priority Critical patent/JPWO2008132850A1/ja
Priority to US12/597,037 priority patent/US20100121632A1/en
Publication of WO2008132850A1 publication Critical patent/WO2008132850A1/ja

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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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Stereophonic System (AREA)

Abstract

　ビットレートを抑えつつ、ステレオ音声信号のＩＣＰ（Inter-channel Prediction）予測性能を向上することができるステレオ音声符号化装置を提供する。この装置（１００）において、ＱＭＦ分析部（１０１）は、ステレオ音声信号を構成する２つのチャネル信号を複数の周波数帯域信号に分割して、モノラル信号生成部（１０４）は、分割周波数帯域の２つのチャネル信号の平均値をモノラル信号として生成し、パラメータ帯域構成部（１０２、１０５）それぞれは、分割周波数帯域の２つのチャネル信号およびモノラル信号それぞれに対し、周波数が低いほど周波数帯域の含まれる帯域数が少なくなるように、１または連続する複数の前記周波数帯域をまとめてパラメータ帯域を構成し、ＩＣＰ分析部（１０６）は、分割周波数帯域のチャネル信号とモノラル信号とを用いてチャネル間予測を行う。
PCT/JP2008/001080 2007-04-25 2008-04-24 ステレオ音声符号化装置、ステレオ音声復号装置、およびこれらの方法 WO2008132850A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2009511690A JPWO2008132850A1 (ja) 2007-04-25 2008-04-24 ステレオ音声符号化装置、ステレオ音声復号装置、およびこれらの方法
US12/597,037 US20100121632A1 (en) 2007-04-25 2008-04-24 Stereo audio encoding device, stereo audio decoding device, and their method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-115660 2007-04-25
JP2007115660 2007-04-25

Publications (1)

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WO2008132850A1 true WO2008132850A1 (ja) 2008-11-06

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WO (1) WO2008132850A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
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CN102436819A (zh) * 2011-10-25 2012-05-02 杭州微纳科技有限公司 无线音频压缩、解压缩方法及音频编码器和音频解码器
KR20140139591A (ko) * 2012-04-05 2014-12-05 후아웨이 테크놀러지 컴퍼니 리미티드 채널간 차이 추정 방법 및 공간적 오디오 코딩 장치

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EP2214163A4 (en) 2007-11-01 2011-10-05 Panasonic Corp CODING DEVICE, DECODING DEVICE AND METHOD THEREFOR
US8386267B2 (en) * 2008-03-19 2013-02-26 Panasonic Corporation Stereo signal encoding device, stereo signal decoding device and methods for them
CN102844808B (zh) * 2010-11-03 2016-01-13 华为技术有限公司 用于编码多通道音频信号的参数编码器
EP2943954B1 (en) * 2013-01-08 2018-07-18 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Improving speech intelligibility in background noise by speech-intelligibility-dependent amplification
US9570083B2 (en) 2013-04-05 2017-02-14 Dolby International Ab Stereo audio encoder and decoder
KR101808810B1 (ko) * 2013-11-27 2017-12-14 한국전자통신연구원 음성/무음성 구간 검출 방법 및 장치
CN112530444B (zh) * 2019-09-18 2023-10-03 华为技术有限公司 音频编码方法和装置

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JPH05281995A (ja) * 1992-03-31 1993-10-29 Sony Corp 音声符号化方法
WO1995034956A1 (fr) * 1994-06-13 1995-12-21 Sony Corporation Procede et dispositif de codage de signal, procede et dispositif de decodage de signal, support d'enregistrement et dispositif de transmission de signaux
JPH1132399A (ja) * 1997-05-13 1999-02-02 Sony Corp 符号化方法及び装置、並びに記録媒体
JP2004252068A (ja) * 2003-02-19 2004-09-09 Matsushita Electric Ind Co Ltd デジタルオーディオ信号の符号化装置及び方法
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JPH05281995A (ja) * 1992-03-31 1993-10-29 Sony Corp 音声符号化方法
WO1995034956A1 (fr) * 1994-06-13 1995-12-21 Sony Corporation Procede et dispositif de codage de signal, procede et dispositif de decodage de signal, support d'enregistrement et dispositif de transmission de signaux
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102436819A (zh) * 2011-10-25 2012-05-02 杭州微纳科技有限公司 无线音频压缩、解压缩方法及音频编码器和音频解码器
CN102436819B (zh) * 2011-10-25 2013-02-13 杭州微纳科技有限公司 无线音频压缩、解压缩方法及音频编码器和音频解码器
KR20140139591A (ko) * 2012-04-05 2014-12-05 후아웨이 테크놀러지 컴퍼니 리미티드 채널간 차이 추정 방법 및 공간적 오디오 코딩 장치
JP2015517121A (ja) * 2012-04-05 2015-06-18 ホアウェイ・テクノロジーズ・カンパニー・リミテッド インターチャネル差分推定方法及び空間オーディオ符号化装置
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JPWO2008132850A1 (ja) 2010-07-22
US20100121632A1 (en) 2010-05-13

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