Processing

Please wait...

Settings

Settings

Goto Application

1. WO2012131247 - PROCESSING AN ENCODED AUDIO SIGNAL IN THE ENCODED DOMAIN BY MICDA CODING

Publication Number WO/2012/131247
Publication Date 04.10.2012
International Application No. PCT/FR2012/050637
International Filing Date 27.03.2012
IPC
G10L 19/04 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
CPC
G10L 19/04
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
G10L 25/90
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
25Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
90Pitch determination of speech signals
G10L 25/93
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
25Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
93Discriminating between voiced and unvoiced parts of speech signals
H03M 3/042
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
3Conversion of analogue values to or from differential modulation
04Differential modulation with several bits ; , e.g. differential pulse code modulation [DPCM]
042with adaptable step size, e.g. adaptive differential pulse code modulation [ADPCM]
Applicants
  • ORANGE [FR]/[FR] (AllExceptUS)
  • CORMIER, Adrien [FR]/[FR] (UsOnly)
  • KOVESI, Balazs [FR]/[FR] (UsOnly)
  • LAMBLIN, Claude [FR]/[FR] (UsOnly)
Inventors
  • CORMIER, Adrien
  • KOVESI, Balazs
  • LAMBLIN, Claude
Agents
  • FRANCE TELECOM R&D/PIV/BREVETS
Priority Data
115259629.03.2011FR
Publication Language French (FR)
Filing Language French (FR)
Designated States
Title
(EN) PROCESSING AN ENCODED AUDIO SIGNAL IN THE ENCODED DOMAIN BY MICDA CODING
(FR) TRAITEMENT DANS LE DOMAINE CODE D'UN SIGNAL AUDIO CODE PAR CODAGE MICDA
Abstract
(EN)
The invention relates to a method for processing an encoded audio signal in a binary stream by MICDA predictive coding, said method comprising the following steps: determining (E101) a signal assessed from the quantification indices of the binary stream; determining (E102) unencoded parameters representative of said audio signal from said assessed signal; and processing (E103) said encoded audio signal using the determined parameters. The invention also relates to a device implementing the method.
(FR)
L'invention se rapporte à un procédé de traitement d'un signal audio codé en un flux binaire par un codage prédictif de type MICDA et tel qu'il comporte les étapes suivantes : - détermination (E101) d'un signal estimé à partir des indices de quantification du flux binaire; - détermination (El 02) de paramètres non codés représentatifs dudit signal audio, à partir dudit signal estimé; - traitement (E103) dudit signal audio codé en utilisant les paramètres déterminés. L'invention se rapporte également un dispositif mettant en œuvre le procédé.
Also published as
Latest bibliographic data on file with the International Bureau