Hi Mathieu
if I'm not wrong, as long as it is white it is flat in spectral terms but the distribution of amplitudes (probability density function, pdf) of white noise can be gaussian, cauchy, uniform, etc. Therefore I'm not sure that the spectrum is proportional to the pdf..
Alberto
On Sun, 20 Aug 2006, alberto.zin@poste.it wrote:
You are right. BTW, I already wrote an external for
gaussian noise
generation (it is an easy adaptation of the noise code +
Box-Muller
transform to make it gaussian - not distributed yet
because I've to
clean up the code, it is my first external ;-). But it did
not change it
very much :-( In addition it seems that using noise~ is
still ok to have
the desired slope in the spectrum...
Doesn't a Gaussian distribution have a spectrum proportional to its own density? That is, exp(-s^2/var)/sqrt(2*pi*var). That means that in the dB vs octave graph, it would appear as a quadratic instead of a straight line, and this doesn't match any of the examples shown in the Colors_of_noise article. Right?
_____________________ ... | Mathieu Bouchard - tél:+1.514.383.3801 - http://artengine.ca/matju | Freelance Digital Arts Engineer, Montréal QC Canada