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Topic: M/S stereo threshold (Read 1613 times) previous topic - next topic
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M/S stereo threshold

In lame code,

it uses M/S stereo threshold. ( from Johnston & Ferreira 1992 ICASSP paper )

why does it use max value that THRm =max(BTHRm, min(BTHRs,MLDs))?

THRm ( M channel threshold)
BThRs ( S channel basic threshold)
MLDs  ( S channel MLD)

I think it must use min value because of unmasking stereo effect.

and is it right?

MLD = spread signal energy * masking level difference factor(1-0.001)

what is MLD?


I always thank you for your help.