[vorbis-dev] floor curve question (whitening filter)

Tue Nov 26 13:52:56 PST 2002

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Hi there,</P>

one step in the encoding process (if I got it right), would becomputing a "floor curve" (according to the psychoacoustic model)<BR>and then subtracting this curve is  from the MDCT data.</P>

It's said that this works like a "whitening filter".</P>

Could somebody please explain, how this is meant ?</P>

I know, that a whitening filter removes the non-whitecomponents from a noise signal. But how can this be adopted<BR>to MDCT data ?</P>

Is it like subtracting only the amplitude values, or some kind offrequency filtering as well ?</P>

 </P>

Thanks,</P>

Stoffke</P></FONT></BODY>

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