WO2008155835A1 - 復号装置、復号方法、及びプログラム - Google Patents

復号装置、復号方法、及びプログラム Download PDF

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Publication number
WO2008155835A1
WO2008155835A1 PCT/JP2007/062419 JP2007062419W WO2008155835A1 WO 2008155835 A1 WO2008155835 A1 WO 2008155835A1 JP 2007062419 W JP2007062419 W JP 2007062419W WO 2008155835 A1 WO2008155835 A1 WO 2008155835A1
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WO
WIPO (PCT)
Prior art keywords
bits
frequency domain
data
decoder
audio signal
Prior art date
Application number
PCT/JP2007/062419
Other languages
English (en)
French (fr)
Inventor
Masanao Suzuki
Masakiyo Tanaka
Miyuki Shirakawa
Yoshiteru Tsuchinaga
Original Assignee
Fujitsu Limited
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 Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2007/062419 priority Critical patent/WO2008155835A1/ja
Priority to JP2009520189A priority patent/JP4947145B2/ja
Priority to EP07767257A priority patent/EP2161720A4/en
Priority to CN200780053405XA priority patent/CN101681626B/zh
Priority to KR1020097026506A priority patent/KR101129153B1/ko
Publication of WO2008155835A1 publication Critical patent/WO2008155835A1/ja
Priority to US12/654,447 priority patent/US8225160B2/en

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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
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • 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

Landscapes

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

Abstract

　オーディオ信号の周波数領域データのスケール値とスペクトル値とをそれぞれ符号化することにより得られた符号化データを復号し、オーディオ信号を出力する復号装置が開示される。当該復号装置は、前記符号化データを復号及び逆量子化し、前記オーディオ信号の周波数領域データを取得する手段と、前記符号化データから、前記スケール値の符号化データのビット数であるスケールビット数、又は前記スペクトル値の符号化データのビット数であるスペクトルビット数を算出する手段と、前記スケールビット数又は前記スペクトルビット数に基づき、前記周波数領域データの量子化誤差を推定する手段と、前記量子化誤差に基づき補正量を算出し、前記周波数領域データを当該補正量を用いて補正する手段と、補正された前記周波数領域データを前記オーディオ信号に変換する手段とを有する。
PCT/JP2007/062419 2007-06-20 2007-06-20 復号装置、復号方法、及びプログラム WO2008155835A1 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PCT/JP2007/062419 WO2008155835A1 (ja) 2007-06-20 2007-06-20 復号装置、復号方法、及びプログラム
JP2009520189A JP4947145B2 (ja) 2007-06-20 2007-06-20 復号装置、復号方法、及びプログラム
EP07767257A EP2161720A4 (en) 2007-06-20 2007-06-20 DECODER, DECODING METHOD AND ASSOCIATED PROGRAM
CN200780053405XA CN101681626B (zh) 2007-06-20 2007-06-20 解码装置以及解码方法
KR1020097026506A KR101129153B1 (ko) 2007-06-20 2007-06-20 복호 장치, 복호 방법, 및 컴퓨터 판독가능한 기록매체
US12/654,447 US8225160B2 (en) 2007-06-20 2009-12-18 Decoding apparatus, decoding method, and recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/062419 WO2008155835A1 (ja) 2007-06-20 2007-06-20 復号装置、復号方法、及びプログラム

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/654,447 Continuation US8225160B2 (en) 2007-06-20 2009-12-18 Decoding apparatus, decoding method, and recording medium

Publications (1)

Publication Number Publication Date
WO2008155835A1 true WO2008155835A1 (ja) 2008-12-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/062419 WO2008155835A1 (ja) 2007-06-20 2007-06-20 復号装置、復号方法、及びプログラム

Country Status (6)

Country Link
US (1) US8225160B2 (ja)
EP (1) EP2161720A4 (ja)
JP (1) JP4947145B2 (ja)
KR (1) KR101129153B1 (ja)
CN (1) CN101681626B (ja)
WO (1) WO2008155835A1 (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8874477B2 (en) 2005-10-04 2014-10-28 Steven Mark Hoffberg Multifactorial optimization system and method
WO2013087861A2 (en) 2011-12-15 2013-06-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus, method and computer programm for avoiding clipping artefacts
CN107073463B (zh) 2014-10-16 2020-10-20 株式会社科特拉 废气净化用催化剂
US10992314B2 (en) * 2019-01-21 2021-04-27 Olsen Ip Reserve, Llc Residue number systems and methods for arithmetic error detection and correction

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH114449A (ja) 1997-06-13 1999-01-06 Asahi Optical Co Ltd 画像圧縮装置および量子化テーブル作成装置
EP1087379A2 (en) 1999-09-27 2001-03-28 Pioneer Corporation Quantization errors correction method in a audio decoder
JP2002290243A (ja) 2001-03-28 2002-10-04 Mitsubishi Electric Corp 符号化方法、符号化装置、復号方法、及び復号装置
JP2002328698A (ja) * 2001-04-27 2002-11-15 Mitsubishi Electric Corp 音響信号復号装置
JP2003177797A (ja) * 2001-12-10 2003-06-27 Sharp Corp ディジタル信号符号化装置およびそれを備えたディジタル信号記録装置
JP2006060341A (ja) * 2004-08-18 2006-03-02 Nippon Telegr & Teleph Corp <Ntt> 復号映像の量子化誤差低減方法及びその装置と、その量子化誤差低減方法の実現に用いられる復号映像の量子化誤差低減プログラム及びそのプログラムを記録したコンピュータ読み取り可能な記録媒体

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69026143T2 (de) * 1989-06-07 1996-08-22 Canon Kk Kodefehler korrigierende Vorhersage-Decodiervorrichtung
JP3134392B2 (ja) * 1991-08-29 2001-02-13 ソニー株式会社 信号符号化装置及び方法、信号復号装置及び方法、信号記録装置及び方法、並びに信号再生装置及び方法
JPH05103309A (ja) * 1991-10-04 1993-04-23 Canon Inc 情報伝送方法及び装置
JP3170193B2 (ja) * 1995-03-16 2001-05-28 松下電器産業株式会社 画像信号の符号化装置及び復号装置
JP3179060B2 (ja) * 1997-06-19 2001-06-25 株式会社東芝 情報データ多重化伝送システムとその多重化装置及び分離装置
US6263468B1 (en) * 1997-10-23 2001-07-17 Sony Corporation Apparatus and method for partial buffering transmitted data to provide robust error recovery in a lossy transmission environment
US7184426B2 (en) * 2002-12-12 2007-02-27 Qualcomm, Incorporated Method and apparatus for burst pilot for a time division multiplex system
US6047035A (en) * 1998-06-15 2000-04-04 Dspc Israel Ltd. Method and device for quantizing the input to soft decoders
US7010737B2 (en) * 1999-02-12 2006-03-07 Sony Corporation Method and apparatus for error data recovery
JP3630590B2 (ja) * 1999-08-25 2005-03-16 沖電気工業株式会社 復号化装置及び伝送システム
US6947487B2 (en) * 2001-04-18 2005-09-20 Lg Electronics Inc. VSB communication system
JP3702464B2 (ja) * 2002-05-08 2005-10-05 ソニー株式会社 データ変換装置およびデータ変換方法、学習装置および学習方法、並びにプログラムおよび記録媒体
JP2004088470A (ja) * 2002-08-27 2004-03-18 Sony Corp 復号装置及び復号方法
CN101834610B (zh) * 2003-10-06 2013-01-30 数字方敦股份有限公司 通过通信信道接收从源发射的数据的方法和装置
US8874477B2 (en) * 2005-10-04 2014-10-28 Steven Mark Hoffberg Multifactorial optimization system and method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH114449A (ja) 1997-06-13 1999-01-06 Asahi Optical Co Ltd 画像圧縮装置および量子化テーブル作成装置
EP1087379A2 (en) 1999-09-27 2001-03-28 Pioneer Corporation Quantization errors correction method in a audio decoder
JP2001102930A (ja) * 1999-09-27 2001-04-13 Pioneer Electronic Corp 量子化誤差補正方法及び装置並びにオーディオ情報復号方法及び装置
JP2002290243A (ja) 2001-03-28 2002-10-04 Mitsubishi Electric Corp 符号化方法、符号化装置、復号方法、及び復号装置
JP2002328698A (ja) * 2001-04-27 2002-11-15 Mitsubishi Electric Corp 音響信号復号装置
JP2003177797A (ja) * 2001-12-10 2003-06-27 Sharp Corp ディジタル信号符号化装置およびそれを備えたディジタル信号記録装置
JP2006060341A (ja) * 2004-08-18 2006-03-02 Nippon Telegr & Teleph Corp <Ntt> 復号映像の量子化誤差低減方法及びその装置と、その量子化誤差低減方法の実現に用いられる復号映像の量子化誤差低減プログラム及びそのプログラムを記録したコンピュータ読み取り可能な記録媒体

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BOSI ET AL.: "ISO/IEC MPEG-2 Advanced Audio Coding", JOURNAL OF THE AUDIO ENGINEERING SOCIETY, AUDIO ENGINEERING SOCIETY, NEW YORK, NY, US, vol. 45, no. 10, 1 October 1997 (1997-10-01), pages 789 - 814
See also references of EP2161720A4

Also Published As

Publication number Publication date
US20100174960A1 (en) 2010-07-08
JPWO2008155835A1 (ja) 2010-08-26
KR20100009642A (ko) 2010-01-28
EP2161720A1 (en) 2010-03-10
CN101681626A (zh) 2010-03-24
EP2161720A4 (en) 2012-06-13
JP4947145B2 (ja) 2012-06-06
US8225160B2 (en) 2012-07-17
CN101681626B (zh) 2012-01-04
KR101129153B1 (ko) 2012-03-27

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