one/F noise source ckt?

[Paul Perry]

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