WO2008126382A1 - 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
WO2008126382A1
WO2008126382A1 PCT/JP2008/000808 JP2008000808W WO2008126382A1 WO 2008126382 A1 WO2008126382 A1 WO 2008126382A1 JP 2008000808 W JP2008000808 W JP 2008000808W WO 2008126382 A1 WO2008126382 A1 WO 2008126382A1
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WO
WIPO (PCT)
Prior art keywords
encoding
icp
residual signal
executes
unit
Prior art date
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PCT/JP2008/000808
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English (en)
French (fr)
Inventor
Jiong Zhou
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.)
Filing date
Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Priority to US12/593,033 priority Critical patent/US8983830B2/en
Priority to JP2009508902A priority patent/JP5355387B2/ja
Priority to AT08720675T priority patent/ATE547786T1/de
Priority to BRPI0809940-5A2A priority patent/BRPI0809940A2/pt
Priority to EP08720675A priority patent/EP2133872B1/en
Publication of WO2008126382A1 publication Critical patent/WO2008126382A1/ja

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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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

Abstract

　ＭＤＣＴおよびＩＣＰを使用してスケーラブルなステレオ音声符号化を実行する場合において、符号化・復号の高効率化と復号音声の高品質化の両方を実現する符号化装置。この符号化装置では、ＭＤＣＴ変換部（１１１）は、窓掛け処理後の左チャネル／右チャネルの残差信号に対してＭＤＣＴ変換を実行する。ＭＤＣＴ変換部（１１２）は、窓掛け処理後のモノラル残差信号に対してＭＤＣＴ変換を実行する。ＩＣＰ分析部（１１７）は、左チャネル／右チャネル残差信号の高帯域部分の周波数係数とモノラル残差信号の高帯域部分の周波数係数との相関関係を用いてＩＣＰ分析を行い、左チャネル／右チャネル残差信号のＩＣＰパラメータを生成する。ＩＣＰパラメータ量子化部（１１８）は、各ＩＣＰパラメータを量子化する。低帯域符号化部（１１９）は、左チャネル／右チャネル残差信号の低帯域部分の周波数係数に対して高精度の符号化を行う。
PCT/JP2008/000808 2007-03-30 2008-03-28 符号化装置および符号化方法 WO2008126382A1 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US12/593,033 US8983830B2 (en) 2007-03-30 2008-03-28 Stereo signal encoding device including setting of threshold frequencies and stereo signal encoding method including setting of threshold frequencies
JP2009508902A JP5355387B2 (ja) 2007-03-30 2008-03-28 符号化装置および符号化方法
AT08720675T ATE547786T1 (de) 2007-03-30 2008-03-28 Codierungseinrichtung und codierungsverfahren
BRPI0809940-5A2A BRPI0809940A2 (pt) 2007-03-30 2008-03-28 Dispositivo de codificação e método de codificação
EP08720675A EP2133872B1 (en) 2007-03-30 2008-03-28 Encoding device and encoding method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-092751 2007-03-30
JP2007092751 2007-03-30

Publications (1)

Publication Number Publication Date
WO2008126382A1 true WO2008126382A1 (ja) 2008-10-23

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PCT/JP2008/000808 WO2008126382A1 (ja) 2007-03-30 2008-03-28 符号化装置および符号化方法

Country Status (6)

Country Link
US (1) US8983830B2 (ja)
EP (1) EP2133872B1 (ja)
JP (1) JP5355387B2 (ja)
AT (1) ATE547786T1 (ja)
BR (1) BRPI0809940A2 (ja)
WO (1) WO2008126382A1 (ja)

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EP2434483A4 (en) * 2009-05-20 2016-04-27 Panasonic Ip Corp America ENCODING DEVICE, DECODING DEVICE, AND ASSOCIATED METHODS
ES2526320T3 (es) * 2010-08-24 2015-01-09 Dolby International Ab Ocultamiento de la recepción mono intermitente de receptores de radio estéreo de FM
CN102208188B (zh) 2011-07-13 2013-04-17 华为技术有限公司 音频信号编解码方法和设备
CN102522092B (zh) * 2011-12-16 2013-06-19 大连理工大学 一种基于g．711．1的语音带宽扩展的装置和方法
US10217468B2 (en) * 2017-01-19 2019-02-26 Qualcomm Incorporated Coding of multiple audio signals
EP3610481B1 (en) * 2017-04-10 2022-03-16 Nokia Technologies Oy Audio coding
US10431231B2 (en) * 2017-06-29 2019-10-01 Qualcomm Incorporated High-band residual prediction with time-domain inter-channel bandwidth extension

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Also Published As

Publication number Publication date
EP2133872A4 (en) 2010-12-22
JP5355387B2 (ja) 2013-11-27
US20100106493A1 (en) 2010-04-29
JPWO2008126382A1 (ja) 2010-07-22
EP2133872B1 (en) 2012-02-29
EP2133872A1 (en) 2009-12-16
BRPI0809940A2 (pt) 2014-10-07
US8983830B2 (en) 2015-03-17
ATE547786T1 (de) 2012-03-15

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