1. Select the audio input to be processed. In stand-alone mode, select the audio interface input and output; with a DAW host, insert audio you want to process into the instrument track hosting the Moog Modular.
2. The Envelope Follower doesn’t default to being in the synth. Right-click on the label for an Envelope module (e.g., Envelope 1) and select Env. Follow. 1 from the pop-up menu.
3. With lower-level external ins (e.g., guitar), you’ll need gain. Patch the external audio signal to two mixer module inputs (these should not be linked).
4. Patch one mixer output to a Low Pass Filter audio input. Patch the other mixer output to the Envelope Follower input.
5. Patch the Envelope Follower Cont Out to the Filter Mod In, then click on the mod in jack and drag up to turn up the modulation amount.
6. Patch the Filter Output to a main Envelope input. Set the envelope controls to Attack = 0, and Decay, Sustain, and Release to maximum (full clockwise).
7. Play a key on your MIDI controller, or the Moog Modular’s virtual controller; this will open up the main Envelope, thus opening up the associated VCA and allowing you to hear the audio input. Tweak the filter, mixer, and envelope follower controls as desired.
-For the tightest envelope tracking, set the Short/Long control to Short and use the minimum Time Control setting that doesn’t give “ripple” (usually about 15 ms).
-It’s generally best to turn off keyboard tracking to the filter (choose No instead of K1, K2, K3, or K4).