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More Wogglebug details

2001-08-14 by grantrichter2001@yahoo.com

I had sworn I would never deliberately make an analog noise 
source. Every transistor in the world is an analog noise source 
(Vladmir Ussachevsky used an FM radio tuned between stations 
at Columbia-Princeton). It seemed absolutely ridiculous to make 
yet another dumb analog noise source. 

However, making a SMART analog noise source is interesting.

Inexpensive switched capacitor filters are available which are not 
typically used for music because they are thought to be too noisy. 
They also require a high frequency clock source. (John Blacet 
has gotten around this limitation by including a 5th analog pole 
to remove the clock noise, and I have heard good things about 
this design).

In the case of the Wogglebug, the high frequency clock source is 
already designed in. And if the filter is dedicated to filtering noise, 
it's own clock noise will be masked.

So the bottom 4 jacks on the Wogglebug (normally a multiple) 
will be the long awaited white noise source with some 
interesting new twists. Sorry, the filters can not be externally 
accessable.

Final prototyping and board layout are happening this week. The 
faceplates are back from the anodizers and I expect to start 
shipping completed Wogglebugs in early September.

Thanks to Dr. Mabuse for his valuable input and, as always, the 
signal to noise ratio of the white noise source will be 100%

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