Support of a multichannel audio extension

Details Support of a multichannel audio extension Support of a multichannel audio extension

2004-04-28

2009-12-01

Hudspeth, David R (Department: 2626)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

C704S201000, C381S002000

Reexamination Certificate

active

07627480

ABSTRACT:
Methods and units supporting a multichannel audio extension in a multichannel audio coding system are shown. In order to allow an efficient extension of an available mono audio signal {tilde over (M)} of a multichannel audio signal L/R, it is proposed that an encoding end of the multichannel audio coding system provides dedicated multichannel extension information for lower frequencies of the multichannel audio signal L/R, in addition to multichannel extension information at least for higher frequencies of the multichannel audio signal L/R. This dedicated multichannel extension information enables a decoding end of the multichannel audio coding system to reconstruct the lower frequencies of the multichannel audio signal L/R with a higher accuracy than the higher frequencies of the multichannel audio signal L/R.

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