[vorbis-dev] floor curve question (whitening filter)
rillian at telus.net
Wed Nov 27 04:57:45 PST 2002
On Tuesday, November 26, 2002, at 09:52 pm, Stoffke wrote:
> I know, that a whitening filter removes the non-white
> components from a noise signal. But how can this be adopted
> to MDCT data ?
I'm not sure I understand your confusion. MDCT data is in the frequency
domain, in which 'white' [noise] means a flat frequency spectrum. The
floor curve is subtracted in frequency space leaving a more evenly
distributed spectrum, which is encoded separately from the floor.
Hope that helps,
<p>--- >8 ----
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