GGS ADSR

[mybud]

Build Rating

5.00 star(s)

A simple ADSR envelope generator from Guru Gara synths based on the AS3310 chip.

This is the seventh EG I've built. Can't seem to get enough of them, so this joins three Erica Synths Polivoks EGs, one each Frequency Central System X and CEMvelope and an AI synths looping EG for good measure.

Next up, Electric Druid's One-Shot EG, which I've already breadboarded and to which I've added a cunning LED mod which shows the action of the EG as it happens.

 

[tegendemuur]

Nice to see modules here! <3

Here's one that you might want to consider: Trapezoidal Envelope Generator.

EMS Synthi-E - Trapezoidal Envelope Generator

Analog synths synthesizers DIY vintage

djjondent.blogspot.com

Definition from somewhere: "A style of envelope generator used particularly by EMS. The envelope it generates has four segments. The attack segment rises from zero level to maximum level in an amount of time set by the attack knob. The "on" segment remains at the maximum level for a fixed amount of time determined by the on knob; in the canonical EMS trapezoid, the on segment is not a sustain segment as it does not hold indefinitely waiting for a gate signal to drop. The decay segment drops from the maximum level to zero level in the amount of time set by the sustain knob. There is a fourth knob marked "off"; if this is at its maximum setting, the output remains at zero level until the trapezoid is triggered again. However, if the knob is not at its maximum, it determines an amount of time to remain off, after which the trapezoid will re-trigger itself and began with the attack segment again. In this mode, the trapezoid acts as an LFO generating a wave shape determined by the four parameters."

The link above also mentions the looping variant Erica put in their Syntrx. Good stuff for more CV fun in Eurorack! - - - (too bad Erica didn't bother adding a CV out (or MIDI out for that matter) on these Syntrxs; even with the audio in I always feel kinda stuck in the box).