WO2009016901A1 - 信号処理装置及び方法、並びにプログラム - Google Patents

信号処理装置及び方法、並びにプログラム Download PDF

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Publication number
WO2009016901A1
WO2009016901A1 PCT/JP2008/061613 JP2008061613W WO2009016901A1 WO 2009016901 A1 WO2009016901 A1 WO 2009016901A1 JP 2008061613 W JP2008061613 W JP 2008061613W WO 2009016901 A1 WO2009016901 A1 WO 2009016901A1
Authority
WO
WIPO (PCT)
Prior art keywords
normalization coefficient
censoring
coefficient information
amount
subtraction
Prior art date
Application number
PCT/JP2008/061613
Other languages
English (en)
French (fr)
Inventor
Hiroyuki Honma
Original Assignee
Sony 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 Sony Corporation filed Critical Sony Corporation
Priority to US12/524,783 priority Critical patent/US8478586B2/en
Priority to CN2008800035446A priority patent/CN101595523B/zh
Priority to EP08790628A priority patent/EP2088582A4/en
Publication of WO2009016901A1 publication Critical patent/WO2009016901A1/ja
Priority to HK10100802.6A priority patent/HK1133945A1/xx

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Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • 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
    • G10L19/03—Spectral prediction for preventing pre-echo; Temporary noise shaping [TNS], e.g. in MPEG2 or MPEG4
    • 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
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

　入力端子１１０からの符号化された符号列が非多重化回路１０１で非多重化され、符号列中の正規化係数情報が正規化係数譲歩得増減回路１０２に送られて、整数値の加算又は減算が行われて信号のレベル調整が行われる。正規化係数情報打ち切り量計算回路１０３では、正規化係数情報の減算量が正規化係数情報よりも大きく、減算後の正規化係数情報が取り得る最小値で打ち切られる場合の打ち切り量を計算する。ゲイン制御関数生成情報修正回路１０４では、打ち切り量に応じて、ゲイン制御関数生成情報を修正する。
PCT/JP2008/061613 2007-07-30 2008-06-26 信号処理装置及び方法、並びにプログラム WO2009016901A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/524,783 US8478586B2 (en) 2007-07-30 2008-06-26 Signal processing apparatus and method, and program
CN2008800035446A CN101595523B (zh) 2007-07-30 2008-06-26 信号处理装置和方法
EP08790628A EP2088582A4 (en) 2007-07-30 2008-06-26 SIGNAL PROCESSING DEVICE, METHOD, AND PROGRAM
HK10100802.6A HK1133945A1 (en) 2007-07-30 2010-01-26 Signal processing apparatus and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007197959A JP5045295B2 (ja) 2007-07-30 2007-07-30 信号処理装置及び方法、並びにプログラム
JP2007-197959 2007-07-30

Publications (1)

Publication Number Publication Date
WO2009016901A1 true WO2009016901A1 (ja) 2009-02-05

Family

ID=40304138

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/061613 WO2009016901A1 (ja) 2007-07-30 2008-06-26 信号処理装置及び方法、並びにプログラム

Country Status (7)

Country Link
US (1) US8478586B2 (ja)
EP (1) EP2088582A4 (ja)
JP (1) JP5045295B2 (ja)
KR (1) KR20100039824A (ja)
CN (1) CN101595523B (ja)
HK (1) HK1133945A1 (ja)
WO (1) WO2009016901A1 (ja)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5754899B2 (ja) 2009-10-07 2015-07-29 ソニー株式会社 復号装置および方法、並びにプログラム
JP5609737B2 (ja) 2010-04-13 2014-10-22 ソニー株式会社 信号処理装置および方法、符号化装置および方法、復号装置および方法、並びにプログラム
JP5850216B2 (ja) 2010-04-13 2016-02-03 ソニー株式会社 信号処理装置および方法、符号化装置および方法、復号装置および方法、並びにプログラム
JP5707842B2 (ja) 2010-10-15 2015-04-30 ソニー株式会社 符号化装置および方法、復号装置および方法、並びにプログラム
WO2015041070A1 (ja) * 2013-09-19 2015-03-26 ソニー株式会社 符号化装置および方法、復号化装置および方法、並びにプログラム
KR20230042410A (ko) 2013-12-27 2023-03-28 소니그룹주식회사 복호화 장치 및 방법, 및 프로그램

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JP3263881B2 (ja) 1994-02-04 2002-03-11 ソニー株式会社 情報符号化方法及び装置、情報復号化方法及び装置並びに情報記録媒体及び情報伝送方法
JP3879249B2 (ja) 1998-05-14 2007-02-07 ソニー株式会社 エンコード方法、デコード方法、エンコード装置、デコード装置、ディジタル信号記録方法、ディジタル信号記録装置、記録媒体、ディジタル信号送信方法及びディジタル信号送信装置
JP3879250B2 (ja) 1998-05-14 2007-02-07 ソニー株式会社 エンコード方法、デコード方法、エンコード装置、デコード装置、ディジタル信号記録方法、ディジタル信号記録装置、記録媒体、ディジタル信号送信方法及びディジタル信号送信装置

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JP3263881B2 (ja) 1994-02-04 2002-03-11 ソニー株式会社 情報符号化方法及び装置、情報復号化方法及び装置並びに情報記録媒体及び情報伝送方法
JP3879249B2 (ja) 1998-05-14 2007-02-07 ソニー株式会社 エンコード方法、デコード方法、エンコード装置、デコード装置、ディジタル信号記録方法、ディジタル信号記録装置、記録媒体、ディジタル信号送信方法及びディジタル信号送信装置
JP3879250B2 (ja) 1998-05-14 2007-02-07 ソニー株式会社 エンコード方法、デコード方法、エンコード装置、デコード装置、ディジタル信号記録方法、ディジタル信号記録装置、記録媒体、ディジタル信号送信方法及びディジタル信号送信装置
JP2000078017A (ja) * 1998-09-02 2000-03-14 Sony Corp デコード方法及びデコード装置
JP2001142498A (ja) * 1999-09-01 2001-05-25 Sony Corp ディジタル信号処理装置および処理方法、ディジタル信号記録装置および記録方法、並びに記録媒体
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See also references of EP2088582A4

Also Published As

Publication number Publication date
EP2088582A4 (en) 2012-08-01
CN101595523A (zh) 2009-12-02
US20100106494A1 (en) 2010-04-29
EP2088582A1 (en) 2009-08-12
US8478586B2 (en) 2013-07-02
JP5045295B2 (ja) 2012-10-10
JP2009031675A (ja) 2009-02-12
KR20100039824A (ko) 2010-04-16
CN101595523B (zh) 2012-04-18
HK1133945A1 (en) 2010-04-09

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