[mad-dev] dithering

[Gabriel Bouvigne]

I thinked again about the dithering stuff.

Dithering is usefull when we normalized, mixed, or subquantized the audio.
In the case of mp3, we done a subquantization. But this subquantization was
not done in the time space, but in the frequency space. That's what make me
think that dithering could be better used if applied in the frequency space.
But of course a constant dithering factor over a granule would a totaly
useless effect, as it wouldn't change over the granule duration.
So I think that this should be done in the frequency space, but on time
periods a lot shorter than a granule.

Does anyone have any opinion about this? Do you think it makes sense? Would
it be feasible?

Regards,

--

Gabriel Bouvigne - France
bouvigne@mp3-tech.org
mobile phone: gsm@mp3-tech.org
icq: 12138873

MP3' Tech: www.mp3-tech.org