Information encoding method and apparatus, information decoding

Details Information encoding method and apparatus, information decoding Information encoding method and apparatus, information decoding

1995-09-27

1997-06-03

Young, Brian K.

Coded data generation or conversion

Digital code to digital code converters

369 49, H03M 500

Patent

active

056359306

ABSTRACT:
An information encoding and decoding apparatus and an information encoding and decoding method for effectively diminishing the mixing noise by pre-mixing and dematrixing. When encoding multi-channel audio or speech signals inclusive of signals of the mixed channels, whereby the audio or speech signals become reproducible even with a simplified decoder, the noise generated on dematrixing the signals of the mixed channels are included in the codestring signals as the difference signals between the pre-mixing signals of the non-independent channels and the signals of the non-independent channels as found by dematrixing signals of mixed channels. Thus the number of bits may be prevented from being increased despite increase in the number of channels.

REFERENCES:
patent: 3989903 (1976-11-01), Cooper et al.

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