Multi-channel encoder

Details Multi-channel encoder Multi-channel encoder

2010-08-30

2011-11-22

Jackson, Jakieda (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Reexamination Certificate

active

08065136

ABSTRACT:
In a method of encoding input signals (CH1to CH3; 400to450) in a multi-channel encoder (5; 15) to generate corresponding output data having down-mix output signals (610, 620) together with complementary parametric data (600), the method includes a first step of down-mixing input signals (CH1to CH3; 400to450) to generate the corresponding down-mix output signals (610, 620), and a second step of processing the input signals (CH1to CH3; 400to450) during down-mixing to generate the parametric data (600) complementary to the down-mix output signals (610, 620). Processing of the input signals (CH1to CH3; 400to450) involves including information in the down-mix signals (610, 620) which is useable during subsequent decoding of the down-mix output signals (610, 620) and the parametric data (600) to determine at least some parameter data and thereby enabling representations of the input signals (CH1to CH3; 400to450) to be subsequently regenerated.

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Chonavel et al: “Multi-Channel Linear Predictive Coding of Audio Signals”; 4th European Conference on Speech Communication and Technology. Eurospeech '95, Madrid, Spain, Sep. 18-21, 1995, vol. 1. Conf. 4, XP000854655.

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