Method and apparatus to encode and decode multi-channel...

Data processing: speech signal processing – linguistics – language – Speech signal processing – Psychoacoustic

Reexamination Certificate

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C704S500000, C704S219000

Reexamination Certificate

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07742912

ABSTRACT:
An encoder (100) for encoding a multi-channel audio signal comprises a prediction processor (101) for generating two residual signals for two signal components of the multi-channel signal by linear prediction which is associated with psycho-acoustic characteristics and which specifically uses psycho-acoustic prediction filters; a rotation processor (105) for rotating the combined signal of the two residual signals to generate a main signal and a side signal, in which the energy of the main signal is maximized and the energy of the side signal is minimized; an encoding processor (109) for encoding the main and preferably the side signal; and an output processor (111) for generating an output signal data, prediction parameters and rotation parameters.

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