exponential rising (was Re: definition of Syncing)

[Mark Smart]

>    Well the ARP Omni's (here I go again with the Omnis) tone generation
>    circuitry uses exponentially decaying sawtooth waves. 
> 
> Exponential over half the cycle, yeah.  That's done as a poor-man's
> sawtooth -- when you need a whole bunch of roughly sawtooth waves and
> your TOG/divider-chain only puts out squares, it's a very reasonable
> solution.

Yeah, roughly is right. When you look at different notes on the scope, some
of them die off to nothing half way through the cycle, while others have
not flattened out yet before the next pulse comes. What's weird is that it
sounds okay! You don't really notice certain notes having a different
timbre.

> 							The RC circuits
>    are crudely tuned to each square wave's frequency (in some cases by
>    chopping off part of the ceramic disc cap and covering up the exposed
>    electrolyte with fingernail polish!).
> 
> This is a joke, right?  You're kidding, right?
> 
>   -- Don

I wish I was! 


************************************************
*     Mark Smart                               *
*     Network Technician                       *
*     University Communications Inc. (UCI)     *
*     smart at medusa.nn.com                      *
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