[sdiy] Akai S612 filter/schematics

[Theo]

From: Andre Majorel <amajorel at teaser.fr>

> On 2002-04-18 01:38 +0200, Theo wrote:
>
> > Don't think your distribution is pink.
> > If memory doesn't fail, pink is 3dB LP filtered white noise (cutoff at
0hz)
>
> The frequencies of the partials were set by raising a number to
> a random power. I think this is a pink distribution (i.e.
> statistically, each octave contains as many partials as any
> other octave).
>
>
Ok I see what you mean now.
Your energy distribution is right but I think your frequency distribution is
different from pink noise.
For better sonic result you might try having the partials distributed
"linear" and use 1/f for the amplitude.
Also the higher the octave the more partials, but keep the energy
distribution.

I've been using similar code to for "additive" synthesis where each
"partial" is a small noise band instead of a sine.
So far I only can generate static sounds, but sending them thru some effects
makes nice atmospheres.
Sonically they sit in the spooky category.

Cheers,
Theo