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 JP2009520189A priority Critical patent/JP4947145B2/ja
Priority to KR1020097026506A priority patent/KR101129153B1/ko
Priority to PCT/JP2007/062419 priority patent/WO2008155835A1/ja
Priority to EP07767257A priority patent/EP2161720A4/en
Priority to CN200780053405XA priority patent/CN101681626B/zh
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 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
    • G10L19/02—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 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
    • G10L19/02—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 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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm

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
JP2009520189A JP4947145B2 (ja) 2007-06-20 2007-06-20 復号装置、復号方法、及びプログラム
KR1020097026506A KR101129153B1 (ko) 2007-06-20 2007-06-20 복호 장치, 복호 방법, 및 컴퓨터 판독가능한 기록매체
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
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
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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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)

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US8874477B2 (en) 2005-10-04 2014-10-28 Steven Mark Hoffberg Multifactorial optimization system and method
CN104081454B (zh) 2011-12-15 2017-03-01 弗劳恩霍夫应用研究促进协会 用于避免削波假象的设备、方法和计算机程序
EP3207990B1 (en) 2014-10-16 2021-04-28 Cataler Corporation Exhaust gas purification catalyst
US10992314B2 (en) * 2019-01-21 2021-04-27 Olsen Ip Reserve, Llc Residue number systems and methods for arithmetic error detection and correction

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See also references of EP2161720A4

Also Published As

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

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