WO2007099244A3 - Procede de limitation de gain d'excitation adaptative dans un decodeur audio - Google Patents

Procede de limitation de gain d'excitation adaptative dans un decodeur audio Download PDF

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Publication number
WO2007099244A3
WO2007099244A3 PCT/FR2007/050779 FR2007050779W WO2007099244A3 WO 2007099244 A3 WO2007099244 A3 WO 2007099244A3 FR 2007050779 W FR2007050779 W FR 2007050779W WO 2007099244 A3 WO2007099244 A3 WO 2007099244A3
Authority
WO
WIPO (PCT)
Prior art keywords
adaptive excitation
error indicating
decoder
comparator
error
Prior art date
Application number
PCT/FR2007/050779
Other languages
English (en)
Other versions
WO2007099244A2 (fr
Inventor
Balazs Kovesi
David Virette
Original Assignee
France Telecom
Balazs Kovesi
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, Balazs Kovesi, David Virette filed Critical France Telecom
Priority to US12/224,566 priority Critical patent/US8180632B2/en
Priority to JP2008556824A priority patent/JP4988774B2/ja
Priority to CN2007800071077A priority patent/CN101395659B/zh
Priority to KR1020087023810A priority patent/KR101372460B1/ko
Priority to EP07731604A priority patent/EP1989705B1/fr
Publication of WO2007099244A2 publication Critical patent/WO2007099244A2/fr
Publication of WO2007099244A3 publication Critical patent/WO2007099244A3/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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • 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
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • 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
    • 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)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Décodeur d'un signal audio codé au moyen d'un codeur comprenant un filtre prédictif à long terme. Selon l'invention, ledit décodeur comprend : - un bloc (211) de détection de pertes de trames de transmission, - un module (222) de calcul de valeurs d'une fonction d'indication d'erreur, représentatives de l'erreur accumulée au décodage sur l'excitation adaptative à la suite de ladite perte de trame de transmission, une valeur arbitraire étant affectée audit gain d'excitation adaptative pour la trame perdue, - un module (213) de calcul d'un paramètre d'indication d'erreur à partir desdites valeurs de la fonction d'indication d'erreur, - un comparateur (214) dudit paramètre d'indication d'erreur à au moins un seuil donné, - un discriminateur (215) apte à déterminer en fonction du résultat fourni par le comparateur (214) une valeur d'au moins un gain d'excitation adaptative à utiliser par le décodeur. Application au codage et du décodage de signaux numériques tels que les signaux audio-fréquences.
PCT/FR2007/050779 2006-02-28 2007-02-13 Procede de limitation de gain d'excitation adaptative dans un decodeur audio WO2007099244A2 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US12/224,566 US8180632B2 (en) 2006-02-28 2007-02-13 Method for limiting adaptive excitation gain in an audio decoder
JP2008556824A JP4988774B2 (ja) 2006-02-28 2007-02-13 オーディオ・デコーダにおける適応励起利得を制限する方法
CN2007800071077A CN101395659B (zh) 2006-02-28 2007-02-13 在音频解码器中限制自适应激励增益的方法
KR1020087023810A KR101372460B1 (ko) 2006-02-28 2007-02-13 오디오 디코드의 적응성 여기 이득을 제한하기 위한 방법
EP07731604A EP1989705B1 (fr) 2006-02-28 2007-02-13 Procede de limitation de gain d'excitation adaptative dans un decodeur audio

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0650688 2006-02-28
FR0650688A FR2897977A1 (fr) 2006-02-28 2006-02-28 Procede de limitation de gain d'excitation adaptative dans un decodeur audio

Publications (2)

Publication Number Publication Date
WO2007099244A2 WO2007099244A2 (fr) 2007-09-07
WO2007099244A3 true WO2007099244A3 (fr) 2007-10-25

Family

ID=36407997

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2007/050779 WO2007099244A2 (fr) 2006-02-28 2007-02-13 Procede de limitation de gain d'excitation adaptative dans un decodeur audio

Country Status (7)

Country Link
US (1) US8180632B2 (fr)
EP (1) EP1989705B1 (fr)
JP (1) JP4988774B2 (fr)
KR (1) KR101372460B1 (fr)
CN (1) CN101395659B (fr)
FR (1) FR2897977A1 (fr)
WO (1) WO2007099244A2 (fr)

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US7877253B2 (en) 2006-10-06 2011-01-25 Qualcomm Incorporated Systems, methods, and apparatus for frame erasure recovery
CN101604525B (zh) * 2008-12-31 2011-04-06 华为技术有限公司 基音增益获取方法、装置及编码器、解码器
ES2936307T3 (es) 2009-10-21 2023-03-16 Dolby Int Ab Sobremuestreo en un banco de filtros de reemisor combinado
CN101969372B (zh) * 2010-10-29 2012-11-28 上海交通大学 基于帧丢失预测的蜂窝网络上行视频通信QoS优化方法
SG192746A1 (en) 2011-02-14 2013-09-30 Fraunhofer Ges Forschung Apparatus and method for processing a decoded audio signal in a spectral domain
ES2534972T3 (es) 2011-02-14 2015-04-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Predicción lineal basada en esquema de codificación utilizando conformación de ruido de dominio espectral
PL3471092T3 (pl) 2011-02-14 2020-12-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Dekodowanie pozycji impulsów ścieżek sygnału audio
CN102959620B (zh) 2011-02-14 2015-05-13 弗兰霍菲尔运输应用研究公司 利用重迭变换的信息信号表示
CA2827000C (fr) * 2011-02-14 2016-04-05 Jeremie Lecomte Dispositif et procede de masquage d'erreurs dans le codage de la parole et audio unifie (usac) a faible retard
AU2012217216B2 (en) 2011-02-14 2015-09-17 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus and method for coding a portion of an audio signal using a transient detection and a quality result
KR102138320B1 (ko) 2011-10-28 2020-08-11 한국전자통신연구원 통신 시스템에서 신호 코덱 장치 및 방법
US9449607B2 (en) 2012-01-06 2016-09-20 Qualcomm Incorporated Systems and methods for detecting overflow
US9842598B2 (en) 2013-02-21 2017-12-12 Qualcomm Incorporated Systems and methods for mitigating potential frame instability
EP2922056A1 (fr) * 2014-03-19 2015-09-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Appareil,procédé et programme d'ordinateur correspondant pour générer un signal de masquage d'erreurs utilisant une compensation de puissance
EP2922054A1 (fr) 2014-03-19 2015-09-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Appareil, procédé et programme d'ordinateur correspondant permettant de générer un signal de masquage d'erreurs utilisant une estimation de bruit adaptatif
EP2922055A1 (fr) 2014-03-19 2015-09-23 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Appareil, procédé et programme d'ordinateur correspondant pour générer un signal de dissimulation d'erreurs au moyen de représentations LPC de remplacement individuel pour les informations de liste de codage individuel
EP2980795A1 (fr) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Codage et décodage audio à l'aide d'un processeur de domaine fréquentiel, processeur de domaine temporel et processeur transversal pour l'initialisation du processeur de domaine temporel

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US5708757A (en) * 1996-04-22 1998-01-13 France Telecom Method of determining parameters of a pitch synthesis filter in a speech coder, and speech coder implementing such method
US5960386A (en) * 1996-05-17 1999-09-28 Janiszewski; Thomas John Method for adaptively controlling the pitch gain of a vocoder's adaptive codebook
US5987406A (en) * 1997-04-07 1999-11-16 Universite De Sherbrooke Instability eradication for analysis-by-synthesis speech codecs
EP1207519A1 (fr) * 1999-06-30 2002-05-22 Matsushita Electric Industrial Co., Ltd. Decodeur audio et procede de compensation d'erreur de codage

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US5708757A (en) * 1996-04-22 1998-01-13 France Telecom Method of determining parameters of a pitch synthesis filter in a speech coder, and speech coder implementing such method
US5960386A (en) * 1996-05-17 1999-09-28 Janiszewski; Thomas John Method for adaptively controlling the pitch gain of a vocoder's adaptive codebook
US5987406A (en) * 1997-04-07 1999-11-16 Universite De Sherbrooke Instability eradication for analysis-by-synthesis speech codecs
EP1207519A1 (fr) * 1999-06-30 2002-05-22 Matsushita Electric Industrial Co., Ltd. Decodeur audio et procede de compensation d'erreur de codage

Also Published As

Publication number Publication date
KR20080102262A (ko) 2008-11-24
FR2897977A1 (fr) 2007-08-31
JP2009528563A (ja) 2009-08-06
EP1989705B1 (fr) 2012-08-15
US20090204412A1 (en) 2009-08-13
US8180632B2 (en) 2012-05-15
CN101395659A (zh) 2009-03-25
CN101395659B (zh) 2012-11-07
KR101372460B1 (ko) 2014-03-11
JP4988774B2 (ja) 2012-08-01
WO2007099244A2 (fr) 2007-09-07
EP1989705A2 (fr) 2008-11-12

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