[sdiy] VERY cool/bizarre: Buchla noise

[Metrophage]

--- Peter Grenader <peter at buzzclick-music.com> wrote:
> Something tells me the signal coming out of the MM5837 ain't true
> random, right?

I think you've nailed it right there! It is not random. My first
experience with this IC  is in the MG-1 I've been playing with this
month. The output of the 5837 is like a short loop of bad noise, with
noticable click when it repeats. This can be kind of fun, as instead of
random pitches and modulations, I get psuedosequences.


> I made a clone of the fluctuating voltage section of the Source of
> Uncertainty.  As far as the parts, it to the letter of the law -
including
> the digital noise chip mentioned above.

Extremely cool, I have always wanted to play with one of these. Though
for your next try, maybe you'll use a noise source which is more
random. Zener / transistor noise is quite evenly distributed and
aperiodic. Even a 4006 yields WAY better noise than a 5837. If you use
a CMOS shift register then you can also vary the clock rate of the
noise, which can be quite fun.

CJ

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