[PD] Colored (fractal, 1/f^a) noise generator for PD

[alberto.zin at poste.it]

Hi,

attached is an abstraction for generation of "colored" noise
(http://en.wikipedia.org/wiki/Colors_of_noise) using a 
relatively new method (by J.N. Kasdin, 1995) that uses
frequency domain multiplication. White, pink, brown noise
(and intermediate flavors) can be obtained by varying
a single parameter (the slope of the spectrum in a linear
log(PSD)-log(f) plot).
I searched a bit in the archives and it seems to me that in
for noise generation in PD we actually have noise~ (uniform
white noise), pink~ (from zexy and cyclone) and a variety of
filters, but no direct generation of 1/f^a noise (am I
right?).   

Inside the archive there is a short readme, look at it
first. To me the patch sounds a little "tubby", let me know
if you have the same feeling. 

Any comment, suggestion for improvements is welcome.

The abstraction lives in
http://www.puredata.org/Members/AlbertoZ

All the best,

Alberto Zin

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