Dual-Burst Generator with built-in LFO

Variatic Erumption is a dual-burst generator. When triggered, it produces a controllable sequence of gates synchronized to a LFO. A 1v/8va LFO is included. Any external LFO/clock may optionally be used. Bursts can be terminated early with the choke. Burst length can be controlled as well as the pattern used for the burst.

https://www.noiseengineering.us/variatic-erumption