Synth DIY: Envelope Generators
An envelope’s basic purpose is to generate a changing control signal that ramps up and down between predetermined levels. Controls typically determine the rate of change of parts of the slope and/or the level a slope will reach. Some envelopes include controls for hold times for a certain stage of the envelope, or delay times before activation.
A more thorough explanation can be found in Sound On Sound’s Synth Secrets series, a very useful reference for many aspects of synth programming.
Even a cursory search shows there are so many envelope generator circuits to be found online that it might seem wasteful to present a few more. However, I wanted to collect a few of my own designs here to illustrate different kinds of envelope circuit, and to offer different ways of achieving them.
Envelopes by type
I will add more items to this list over time.
Tags: AD envelope, ADSR, analogue, AR envelope, attack decay envelope, attack release, circuit bending, contour generator, CV/Gate, envelope generator, gate trigger, synth diy, synth mods, Synthesizer