MOTM

PWM depth means how much incoming PWM control voltage is allowed to 
modulate the width.  If you set the depth to 0, no matter what is plugged 
into the PWM CV jack, nothing will change.  Set it to 10, and you get the 
most change for small variation of the CV.

  And, oscillators never 'turn off', unless you power them off.  To make 
the tone build up and die away, you use an amplifier (VCA) and control it 
to increase/decrease the volume of the tone plugged into it from the 
oscillator.  You control the VCA with, well, anything, but an envelope 
generator is a good place to start.

Crow
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On Fri, 20 Aug 2004, Jeff Laity wrote:

> Anyhow, I have a few newbie questions while I'm waiting for parts. 
> First, what does the PWM Depth do? There's an initial width and PWM 
> amount, I get that. But depth I can't figure out.
> 
> Also, how do you do a long release time on a modular synth? When I let 
> go of the key, the oscillator stops, right? Do I feed the CV signal 
> through something to extend it? An envelope generator? I can't get my 
> head around this quite yet.
> 
> Thanks for your help, -jl