Erica Synths EDU DIY EG Eurorack Module Kit User Manual
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potentiometer
. This means that you can’t control those two phases individually –
changing one will also change the other. So we can never have a curve with a long decay
and super short release.
Second, the decay phase is directly dependent on the set attack
. Why’s that? Simple.
If we dial in a slow attack, the capacitor will not be charged up to the peak level during
the short initial burst. Maybe it won’t even reach the set sustain level, let alone surpass it.
In e
ff
ect, we basically skip the decay phase, as we are never dropping down to the
sustain level. Now granted, a proper ADSR envelope shouldn’t have these two problems.
But for how simple our circuit is, and how few components it uses, I think we can book
this as a worthwhile tradeo
ff
. So let’s set this up on the breadboard!
Try playing around with the new sustain knob, and test how it interacts with the other two.
You should be able to dial in a pretty wide range of filter movements now. Great! But it
might be nice if we had some visual indication of the voltage our envelope is sending out,
right?
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