WO2006126115 PREDICTIVE ENCODING OF A MULTI CHANNEL SIGNAL

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Publication Number WO/2006/126115

Publication Date 30.11.2006

International Application No. PCT/IB2006/051445

International Filing Date 09.05.2006

IPC

CPC

Applicants

KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL]/[NL] (AllExceptUS)
DEN BRINKER, Albertus, C. [NL]/[NL] (UsOnly)
BISWAS, Arijit [IN]/[NL] (UsOnly)

Inventors

DEN BRINKER, Albertus, C.
BISWAS, Arijit

Agents

SLENDERS, Petrus, J., W.

Priority Data

05104475.8

25.05.2005

Publication Language English (en)

Filing Language English (EN)

Designated States

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Title

(EN) PREDICTIVE ENCODING OF A MULTI CHANNEL SIGNAL

(FR) CODAGE PREDICTIF D'UN SIGNAL MULTIVOIE

Abstract

(EN) A multi channel encoder (100) comprises a multi channel linear predictive analyzer (105) for linear predictive coding of a multi channel signal. A prediction controller (101) comprises a prediction parameter generator (301) which generates linear prediction coding parameter matrices for the multi channel signal which are then mapped to reflection matrices. The reflection matrices may specifically be normalized backward or forward reflection matrices. The reflection matrices are encoded by a reflection parameter encoder (305) and combined with other encoded data in a multiplexer (109) to generate encoded data for the multi channel signal. The reflection parameter encoder (305) may specifically decompose the reflection matrices using an Eigenvalue decomposition or a singular value decomposition and the resulting data may be quantized for transmission. A decoder (200) receives the encoded data and obtains the prediction parameters by performing the inverse operation.

(FR) Un codeur multivoie (100) comprend un analyseur prédictif linéaire mulltivoie (105) servant au codage prédictif linéaire d'un signal multivoie. Une unité de commande prédictive (101) comprend un générateur de paramètre de prédiction (301) qui génère des matrices de paramètre de codage prédictif linéaire pour le signal multivoie qui sont ensuite mappées sur des matrices de réflexion. Les matrices de réflexion peuvent être normalisées spécifiquement en des matrices de réflexion en amont ou en aval. Les matrices de réflexion sont codées par un codeur de paramètre de réflexion (305) et sont combinées avec d'autres données codées dans un multiplexeur (109) pour générer des données codées destinées au signal multivoie. Le codeur de paramètre de réflexion (305) peut décomposer spécifiquement les matrices de réflexion en utilisant une décomposition en valeurs propres ou une décomposition en valeurs singulières et les données obtenues peuvent être quantifiées pour la transmission. Un décodeur (200) reçoit les données codées et obtient les paramètres de prédiction en effectuant l'opération inverse.

G	PHYSICS
10	MUSICAL INSTRUMENTS; ACOUSTICS
L	SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19	Speech 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

G	PHYSICS
10	MUSICAL INSTRUMENTS; ACOUSTICS
L	SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19	Speech 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

G	PHYSICS
10	MUSICAL INSTRUMENTS; ACOUSTICS
L	SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19	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
008	Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing

G	PHYSICS
10	MUSICAL INSTRUMENTS; ACOUSTICS
L	SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19	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
04	using predictive techniques

G	PHYSICS
10	MUSICAL INSTRUMENTS; ACOUSTICS
L	SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19	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
04	using predictive techniques
06	Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients

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1. WO2006126115 - PREDICTIVE ENCODING OF A MULTI CHANNEL SIGNAL