Erica Synths EDU DIY EG Eurorack Module Kit - Manual (Page 20)

THE INVERTED OUTPUT
At the beginning of this manual, I promised two extra goodies to make up for our
envelope’s shortcomings. One of which was an inverted output. But before we can add
one, we’ll have to clarify what an inverted output is, exactly. If we take the name purely at
face value, we might imagine the signal coming from our envelope’s inverted output to
look like this.
So where our regular output would start o ff at a 0 V baseline and go up from there, the
inverted output would drop below that baseline instead. And though this is totally doable
(and is sometimes done this way in other modules), I think it’d be much more useful if the
output looked like this instead.
It’s the same core principle, but the baseline is now our high level voltage. Meaning that
the curve is no longer dipping into the negatives, but rather „peaking“ at ground level.
This way, it’ll do the exact opposite of what we’ve seen before when controlling a VCF
with it. The filter will be wide open by default, and then close down as the envelope is
cycling through its phases. Cool! But how do we actually implement this?
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