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WO2007007001A3 - Dispositif de codage/decodage hierarchique - Google Patents

Dispositif de codage/decodage hierarchique Download PDF

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Publication number
WO2007007001A3
WO2007007001A3 PCT/FR2006/050690 FR2006050690W WO2007007001A3 WO 2007007001 A3 WO2007007001 A3 WO 2007007001A3 FR 2006050690 W FR2006050690 W FR 2006050690W WO 2007007001 A3 WO2007007001 A3 WO 2007007001A3
Authority
WO
WIPO (PCT)
Prior art keywords
band
encoding
layer
frequency band
hierarchical encoding
Prior art date
Application number
PCT/FR2006/050690
Other languages
English (en)
Other versions
WO2007007001A2 (fr
Inventor
Stephane Ragot
David Virette
Original Assignee
France Telecom
Stephane Ragot
David Virette
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 filed Critical France Telecom
Priority to KR1020087003000A priority Critical patent/KR101303145B1/ko
Priority to EP06779029A priority patent/EP1905010B1/fr
Priority to CN2006800336707A priority patent/CN101263553B/zh
Priority to AT06779029T priority patent/ATE511179T1/de
Priority to JP2008520925A priority patent/JP5112309B2/ja
Priority to BRPI0612987-0A priority patent/BRPI0612987A2/pt
Priority to US11/988,758 priority patent/US8374853B2/en
Publication of WO2007007001A2 publication Critical patent/WO2007007001A2/fr
Publication of WO2007007001A3 publication Critical patent/WO2007007001A3/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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (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)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Système de codage d'un signai audio hiérarchique, comprenant, au moins, une couche cœur à codage paramétrique par analyse par synthèse dans une première bande de fréquence, une couche d'extension de bande destinée à élargir ladite première bande de fréquence en une deuxième bande de fréquence, dite bande étendue. Selon l'invention, ledit système comprend également une couche d'amélioration de la qualité du codage audio dans la bande étendue, basée sur un codage par transformée utilisant un paramètre spectral issu de ladite couche d'extension de bande. Application à la transmission de signaux de parole et/ou audio sur des réseaux de paquets.
PCT/FR2006/050690 2005-07-13 2006-07-07 Dispositif de codage/decodage hierarchique WO2007007001A2 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
KR1020087003000A KR101303145B1 (ko) 2005-07-13 2006-07-07 계층적 오디오 신호를 코딩하기 위한 시스템, 오디오 신호를 코딩하는 방법, 컴퓨터-판독가능한 매체 및 계층적 오디오 디코더
EP06779029A EP1905010B1 (fr) 2005-07-13 2006-07-07 Codage/décodage audio hiérarchique
CN2006800336707A CN101263553B (zh) 2005-07-13 2006-07-07 分级编码/解码设备
AT06779029T ATE511179T1 (de) 2005-07-13 2006-07-07 Hierarchischen audio-kodierung/-dekodierung
JP2008520925A JP5112309B2 (ja) 2005-07-13 2006-07-07 階層符号化／復号化装置
BRPI0612987-0A BRPI0612987A2 (pt) 2005-07-13 2006-07-07 dispositivo de codificaÇço/decodificaÇço hierÁrquica
US11/988,758 US8374853B2 (en) 2005-07-13 2006-07-07 Hierarchical encoding/decoding device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0552199 2005-07-13
FR0552199A FR2888699A1 (fr) 2005-07-13 2005-07-13 Dispositif de codage/decodage hierachique

Publications (2)

Publication Number Publication Date
WO2007007001A2 WO2007007001A2 (fr) 2007-01-18
WO2007007001A3 true WO2007007001A3 (fr) 2007-04-12

Family

ID=36608212

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2006/050690 WO2007007001A2 (fr) 2005-07-13 2006-07-07 Dispositif de codage/decodage hierarchique

Country Status (9)

Country Link
US (1) US8374853B2 (fr)
EP (1) EP1905010B1 (fr)
JP (1) JP5112309B2 (fr)
KR (1) KR101303145B1 (fr)
CN (1) CN101263553B (fr)
AT (1) ATE511179T1 (fr)
BR (1) BRPI0612987A2 (fr)
FR (1) FR2888699A1 (fr)
WO (1) WO2007007001A2 (fr)

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Also Published As

Publication number Publication date
EP1905010A2 (fr) 2008-04-02
CN101263553A (zh) 2008-09-10
EP1905010B1 (fr) 2011-05-25
ATE511179T1 (de) 2011-06-15
BRPI0612987A2 (pt) 2010-12-14
CN101263553B (zh) 2013-10-02
KR20080032160A (ko) 2008-04-14
KR101303145B1 (ko) 2013-09-09
FR2888699A1 (fr) 2007-01-19
JP2009501351A (ja) 2009-01-15
US20090326931A1 (en) 2009-12-31
WO2007007001A2 (fr) 2007-01-18
US8374853B2 (en) 2013-02-12
JP5112309B2 (ja) 2013-01-09

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