one/F noise source ckt?

[matti at devo.com]

Has anybody got 1/f noise generating algorithms handy? Analog synthesizers 
really are just specialised analog computers, and should be well suited to the 
feedback going on in most (all?) fractal-generating algorithms.

Quoting Paul Perry <pfperry at melbpc.org.au>:

> I'm looking for a source of 1/f (AKA flicker noise)
> noise generator, or something resembling it.
> Thins 1/f noise is so-called, because the amplitude is
> inversely proportional to frequency.
> And, is connected with fractal geometry, in the sense that
> a plot of this noise is self-similar in the same way.
> 
> I want a generator over the usual LFO ranges, .01 Hz to audio say.
> Does anyone know a reliable generator? Or a simple algorithm?
> Or, what I would particularly like, a filtering strategy to 
> convert white noise into it? (note that I'd need a white noise source
> that went near as dammit to DC)
> 
> I know a lot of you guys know more maths than i do!
> and, I only need an approximation..
> 
> paul perry melbourne australia
> 



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