Attenuverter

Scales and offsets CV, and can flip its sign

Open in the synth with a demo patch Open Modular

What it does

The attenuverter is a control for control signals: Scale multiplies the CV (a negative value inverts it) and Offset adds a constant. That gets you two different motions from one LFO: one filter opens while another closes. It can also shift a bipolar LFO into the positive range so the modulation never dips below zero.

Try this

Reduce an LFO with Attenuverter so the Filter moves only a little.

Ports

in: CV in
out: CV out

Parameters

Scale · Offset

Try this

LFO → Attenuverter (Scale −1) → Cutoff of a second filter: two filters breathing out of phase.
Scale 0.5 and Offset 0.5 turn an LFO from −1…1 into 0…1, handy for a VCA Gain.

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