ASR Envelope

Static envelope generator with loop feature

In envelope mode, it generates the same envelope shapes as a normal ADSR envelope, however, the Decay and Release rates are controlled by a single control named Release. The envelope has traditional RC charging / discharging (exponential decay) shapes, ideal for driving a linear VCA, modulating filter cutoff, etc. While it is not be the fastest envelope in the west, or in any cardinal direction for that matter, it is reasonably snappy with a 1.5ms minimum attack time. In loop mode it becomes a basic LFO with rates ranging from 3 seconds up to 170 Hz governed by the Attack and Decay settings.

(The faceplate of this unit is self-made)

https://kassu2000.blogspot.com/2018/10/asr-envelope.html