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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
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2008/001080
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English (en)
French (fr)
Inventor
Kok Seng Chong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
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Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Priority to US12/597,037 priority Critical patent/US20100121632A1/en
Priority to JP2009511690A priority patent/JPWO2008132850A1/ja
Publication of WO2008132850A1 publication Critical patent/WO2008132850A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G10L19/008—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

Landscapes

  • 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)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical 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 Ceased WO2008132850A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US12/597,037 US20100121632A1 (en) 2007-04-25 2008-04-24 Stereo audio encoding device, stereo audio decoding device, and their method
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

Applications Claiming Priority (2)

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

Publications (1)

Publication Number Publication Date
WO2008132850A1 true WO2008132850A1 (ja) 2008-11-06

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PCT/JP2008/001080 Ceased WO2008132850A1 (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

Country Status (3)

Country Link
US (1) US20100121632A1 (ja)
JP (1) JPWO2008132850A1 (ja)
WO (1) WO2008132850A1 (ja)

Cited By (2)

* 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
KR20140139591A (ko) * 2012-04-05 2014-12-05 후아웨이 테크놀러지 컴퍼니 리미티드 채널간 차이 추정 방법 및 공간적 오디오 코딩 장치

Families Citing this family (7)

* Cited by examiner, † Cited by third party
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US8352249B2 (en) 2007-11-01 2013-01-08 Panasonic Corporation Encoding device, decoding device, and method thereof
WO2009116280A1 (ja) * 2008-03-19 2009-09-24 パナソニック株式会社 ステレオ信号符号化装置、ステレオ信号復号装置およびこれらの方法
WO2012058805A1 (en) * 2010-11-03 2012-05-10 Huawei Technologies Co., Ltd. Parametric encoder for encoding a multi-channel audio signal
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
KR20230020553A (ko) 2013-04-05 2023-02-10 돌비 인터네셔널 에이비 스테레오 오디오 인코더 및 디코더
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 (en) * 1994-06-13 1995-12-21 Sony Corporation Method and device for encoding signal, method and device for decoding signal, recording medium, and signal transmitting device
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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US6356211B1 (en) * 1997-05-13 2002-03-12 Sony Corporation Encoding method and apparatus and recording medium
SE519552C2 (sv) * 1998-09-30 2003-03-11 Ericsson Telefon Ab L M Flerkanalig signalkodning och -avkodning
KR20070090219A (ko) * 2004-12-28 2007-09-05 마츠시타 덴끼 산교 가부시키가이샤 음성 부호화 장치 및 음성 부호화 방법
JP4907522B2 (ja) * 2005-04-28 2012-03-28 パナソニック株式会社 音声符号化装置および音声符号化方法
WO2007088853A1 (ja) * 2006-01-31 2007-08-09 Matsushita Electric Industrial Co., Ltd. 音声符号化装置、音声復号装置、音声符号化システム、音声符号化方法及び音声復号方法
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JPH05281995A (ja) * 1992-03-31 1993-10-29 Sony Corp 音声符号化方法
WO1995034956A1 (en) * 1994-06-13 1995-12-21 Sony Corporation Method and device for encoding signal, method and device for decoding signal, recording medium, and signal transmitting device
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
JP2006524832A (ja) * 2003-04-30 2006-11-02 コーディング テクノロジーズ アクチボラゲット 複素指数変調フィルタバンクを基にした新型プロセッシングおよび適応型時間信号伝達方法

Cited By (6)

* 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
US9275646B2 (en) 2012-04-05 2016-03-01 Huawei Technologies Co., Ltd. Method for inter-channel difference estimation and spatial audio coding device
KR101662682B1 (ko) * 2012-04-05 2016-10-05 후아웨이 테크놀러지 컴퍼니 리미티드 채널간 차이 추정 방법 및 공간적 오디오 코딩 장치

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Publication number Publication date
JPWO2008132850A1 (ja) 2010-07-22
US20100121632A1 (en) 2010-05-13

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