[vorbis-dev] Using the vorbis psychoacoustics model

Gregory Maxwell greg at linuxpower.cx
Sat Jul 8 12:24:31 PDT 2000



On Fri, 7 Jul 2000, Mark Taylor wrote:

[snip]
> gpsycho is also a partition-band model.  That is, it computes
> maskings in (about) 64 bands, each about 3.5 barks wide.  I beleive
> Vorbis does the full "line-by-line calculation" (it computes maskings for
> every single spectral line/cofficient).  But the energies/maskings of
> individual MDCT coefficients only make sense when some kind of
> averaging/smoothing is done, so this is probably not an advantage.
[snip]

Yes, the smoor

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