Envelope Generator

Version 0.1 from September 2020

Here’s the first Envelope Generator (ADSR) that I built for my drum machine project. It’s based on “The Fastest Envelope in the West” by René Schmitz which is comparably easy to build and works awesomely! I modified and extended it a bit for my purpose (changed R and C values and added some peripherals).


  • ✅ Full stack envelope (attack, decay, sustain and release)
  • ✅ Manual trigger
  • ✅ 2 outputs (for e.g. VCO pitch and VCA)


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