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

[rillian]

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,
  -r

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