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WO2007010158A3 - Procede de commutation de debit en decodage audio scalable en debit et largeur de bande - Google Patents

Procede de commutation de debit en decodage audio scalable en debit et largeur de bande Download PDF

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Publication number
WO2007010158A3
WO2007010158A3 PCT/FR2006/050697 FR2006050697W WO2007010158A3 WO 2007010158 A3 WO2007010158 A3 WO 2007010158A3 FR 2006050697 W FR2006050697 W FR 2006050697W WO 2007010158 A3 WO2007010158 A3 WO 2007010158A3
Authority
WO
WIPO (PCT)
Prior art keywords
rate
switching
signal
bandwidth
audio decoding
Prior art date
Application number
PCT/FR2006/050697
Other languages
English (en)
Other versions
WO2007010158A2 (fr
Inventor
Stephane Ragot
David Virette
Balazs Kovesi
Original Assignee
France Telecom
Stephane Ragot
David Virette
Balazs Kovesi
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 France Telecom, Stephane Ragot, David Virette, Balazs Kovesi filed Critical France Telecom
Priority to JP2008522028A priority Critical patent/JP5009910B2/ja
Priority to EP06779036A priority patent/EP1907812B1/fr
Priority to AT06779036T priority patent/ATE490454T1/de
Priority to DE602006018618T priority patent/DE602006018618D1/de
Priority to KR1020087004177A priority patent/KR101295729B1/ko
Priority to US11/989,313 priority patent/US8630864B2/en
Priority to CN2006800338079A priority patent/CN101263554B/zh
Publication of WO2007010158A2 publication Critical patent/WO2007010158A2/fr
Publication of WO2007010158A3 publication Critical patent/WO2007010158A3/fr

Links

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
    • G10L19/04—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 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
    • G10L19/04—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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] 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
    • G10L19/04—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
    • G10L19/26—Pre-filtering or post-filtering

Landscapes

  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Procédé de commutation de débit au décodage d'un signal audio codé par un système de codage audio multi-débit, ledit décodage comprenant au moins une étape de post-traitement dépendant du débit. Selon l'invention, lors d'une commutation d'un débit initial à un débit final, ledit procédé comprend une étape de transition par passage continu d'un signal au débit initial à un signal au débit final, au moins un desdits signaux étant post-traité. Application à la transmission de signaux de parole et/ou audio sur des réseaux de paquets, de type voix sur IP.
PCT/FR2006/050697 2005-07-22 2006-07-10 Procede de commutation de debit en decodage audio scalable en debit et largeur de bande WO2007010158A2 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2008522028A JP5009910B2 (ja) 2005-07-22 2006-07-10 レートスケーラブル及び帯域幅スケーラブルオーディオ復号化のレートの切り替えのための方法
EP06779036A EP1907812B1 (fr) 2005-07-22 2006-07-10 Procede de commutation de debit en decodage audio scalable en debit et largeur de bande
AT06779036T ATE490454T1 (de) 2005-07-22 2006-07-10 Verfahren zum umschalten der raten- und bandbreitenskalierbaren audiodecodierungsrate
DE602006018618T DE602006018618D1 (de) 2005-07-22 2006-07-10 Verfahren zum umschalten der raten- und bandbreitenskalierbaren audiodecodierungsrate
KR1020087004177A KR101295729B1 (ko) 2005-07-22 2006-07-10 비트 레이트­규모 가변적 및 대역폭­규모 가변적 오디오디코딩에서 비트 레이트 스위칭 방법
US11/989,313 US8630864B2 (en) 2005-07-22 2006-07-10 Method for switching rate and bandwidth scalable audio decoding rate
CN2006800338079A CN101263554B (zh) 2005-07-22 2006-07-10 在比特率分级和带宽分级的音频解码中的比特率切换方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0552286 2005-07-22
FR0552286 2005-07-22

Publications (2)

Publication Number Publication Date
WO2007010158A2 WO2007010158A2 (fr) 2007-01-25
WO2007010158A3 true WO2007010158A3 (fr) 2007-05-10

Family

ID=36177265

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2006/050697 WO2007010158A2 (fr) 2005-07-22 2006-07-10 Procede de commutation de debit en decodage audio scalable en debit et largeur de bande

Country Status (10)

Country Link
US (1) US8630864B2 (fr)
EP (1) EP1907812B1 (fr)
JP (1) JP5009910B2 (fr)
KR (1) KR101295729B1 (fr)
CN (1) CN101263554B (fr)
AT (1) ATE490454T1 (fr)
DE (1) DE602006018618D1 (fr)
ES (1) ES2356492T3 (fr)
RU (1) RU2419171C2 (fr)
WO (1) WO2007010158A2 (fr)

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Also Published As

Publication number Publication date
ATE490454T1 (de) 2010-12-15
KR101295729B1 (ko) 2013-08-12
JP5009910B2 (ja) 2012-08-29
ES2356492T3 (es) 2011-04-08
EP1907812B1 (fr) 2010-12-01
KR20080033997A (ko) 2008-04-17
CN101263554B (zh) 2011-12-28
JP2009503559A (ja) 2009-01-29
RU2008106750A (ru) 2009-08-27
DE602006018618D1 (de) 2011-01-13
US20090306992A1 (en) 2009-12-10
US8630864B2 (en) 2014-01-14
CN101263554A (zh) 2008-09-10
EP1907812A2 (fr) 2008-04-09
WO2007010158A2 (fr) 2007-01-25
RU2419171C2 (ru) 2011-05-20

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