Documenting my work at the intersection of technology and music.

Synthesizer - Envelope module

This is an ADSR-style envelope module. It’s dual channel with the knobs controlling both channels.

To my knowledge this circuit is a unique approach to the problem. It uses an LM13700 as a slew-rate-limited buffer and a cheap analog latch.


Source files including code and CAD are available on GitHub. Like most everything I do, this is open hardware.

Creative Commons License


This module is still a work-in-progress. The design has been confirmed on a breadboard, but the PCB still needs to be designed.


Source code

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