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1. WO2016016567 - FRAME LOSS MANAGEMENT IN AN FD/LPD TRANSITION CONTEXT

Publication Number WO/2016/016567
Publication Date 04.02.2016
International Application No. PCT/FR2015/052075
International Filing Date 27.07.2015
IPC
G10L 19/005 2013.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signal 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
005Correction of errors induced by the transmission channel, if related to the coding algorithm
G10L 19/20 2013.01
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signal 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
04using predictive techniques
16Vocoder architecture
18Vocoders using multiple modes
20using sound class specific coding, hybrid encoders or object based coding
CPC
G10L 19/005
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech 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
005Correction of errors induced by the transmission channel, if related to the coding algorithm
G10L 19/022
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech 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
02using spectral analysis, e.g. transform vocoders or subband vocoders
022Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
G10L 19/20
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech 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
04using predictive techniques
16Vocoder architecture
18Vocoders using multiple modes
20using sound class specific coding, hybrid encoders or object based coding
Applicants
  • ORANGE [FR]/[FR]
Inventors
  • FAURE, Julien
  • RAGOT, Stéphane
Agents
  • ORANGE/IMT/OLPS/IPL/PAT
Priority Data
145735629.07.2014FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) FRAME LOSS MANAGEMENT IN AN FD/LPD TRANSITION CONTEXT
(FR) GESTION DE LA PERTE DE TRAME DANS UN CONTEXTE DE TRANSITION FD/LPD
Abstract
(EN)
The invention relates to a method for decoding a digital signal encoded using predictive coding and transform coding, comprising the following steps: - predictive decoding (304) of a preceding frame of the digital signal, encoded by a set of predictive coding parameters; - detecting (302) the loss of a current frame of the encoded digital signal; - generating (312) by prediction, from at least one predictive coding parameter encoding the preceding frame, a frame for replacing the current frame; - generating (316) by prediction, from at least one predictive coding parameter encoding the preceding frame, an additional segment of digital signal; - temporarily storing (317) said additional segment of digital signal.
(FR)
Gestion de la perte de trame dans un contexte de transition FD/LPD L'invention concerne un procédé de décodage d'un signal numérique codé selon un codage prédictif et selon un codage par transformée, comprenant les étapes suivantes : - décodage (304) prédictif d'une trame précédente du signal numérique, codée par un ensemble de paramètres de codage prédictif; - détection (302) de la perte d'une trame courante du signal numérique codé; - génération (312) par prédiction, à partir d'au moins un paramètre de codage prédictif codant la trame précédente, d'une trame de remplacement de la trame courante; - génération (316) par prédiction, à partir d'au moins un paramètre de codage prédictif codant la trame précédente, d'un segment supplémentaire de signal numérique; - stockage (317) temporaire dudit segment supplémentaire de signal numérique.
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