Wiardgroup

I understand that Grant chose to sample a noise modulated 
sawtooth 
> > wave, rather than the noise modulated sine wave found in 
the Buchla SOU 
> > circuit.  Have you done any mods regarding this sampled 
waveform?
> > 

In the original Source of Uncertainty, a white noise source is 
used to modulate a triangle wave oscillator. A white noise 
source has a Gaussian probability distribution (clustered around 
zero). By using noise to modulate an oscillator, then sample that, 
you produce a uniform probability distribution (any sample value 
is as likely as any other).

It does not matter if you use a triangle wave or a sawtooth wave, 
they both produce uniform probability distributions.

In the case of the Woggle Bug, the sawtooth output of the woggle 
circuit is sampled for it's input. In computing terms, the circuit is 
recursive. Because it is recursive, it has reduced information 
entropy relative to a truely random source (noise source).

The purpose for this is that music in NOT very random. In 
information theory terms, it has low information entropy. 
Because it repeats and exhibits short term self similarity.

Doctor Mabuse and I feel that the SOU is one of the most 
"musical" of the random generators. The use of recursion to 
further reduce the entropy level is an attempt to make it even 
more "musical". In theory, it should generate "random" 
sequences which exhibit short term self similarity and repeating 
features, like music does.

This WILL limit the fluctuation range of the smooth source, so to 
get a full 8 volt range from the smooth CV output, you need to set 
the "Smooth Range", "Woggle Range" and "Woggle Time" 
controls to maximum.

As a rule of thumb, the more time the yellow "Bug Light" LED is 
on, the more random the output functions will be.