[sdiy] preferred noise source circuits

[David G. Dixon]

Hey Team,

I'm thinking about a combined S&H and Noise Source module.  I'm looking at
Ray Wilson's "S&H with CV Clock" and "Multi Noise and Random Gate and
Trigger" circuits for this purpose.  I'm also looking at his "Noise
Cornucopia".  I quite like the idea of using the window comparator to
generate "grainy" noise and then using this grainy noise to drive flip-flops
to make random gates and triggers.  I'm not sure whether this justifies
having separate circuits, as in the Cornucopia.  I'm wondering the
following:

1) Does anyone have any strong opinions of these circuits in general? (Feel
free to respond offline if those opinions are negative.)

2) Does anyone have any other preferred circuits in these categories that I
should know about?

3) How useful is it to have dedicated filters in the noise circuit itself?
Is it perhaps better simply to have white noise available at an output jack,
and do the filtering with separate filter modules?  I'm thinking that the
real value of noise filtering is being able to sweep the cutoff frequency
with a CV or pitch the noise with a keyboard, and that just being able to
adjust between "white", "pink" or "red" with a knob might not be all that
useful.  As such, I may simply add a noise output jack to the S&H circuit
and normal the S&H input to this onboard noise source, in which case the
module will be 1U wide and very simple.  What do we think about that?