Envelope Generator Modules

Pittsburgh ADSR

A four stage envelope generator with independently adjustable Attack, Decay, Sustain, and Release stages. This module does one thing amazingly well. The ADSR smooths the shape of the incoming gates and triggers to produce a more expressive instrument. The ADSR output can be used to control the amplitude of an oscillator, the cutoff frequency of a filter or any other function on a module that accepts control voltages.

Pittsburgh Envelope

A complex multi-stage slope generator with voltage controllable attack and decay/release. Using the sustain switch to toggle between modes, the Envelope functions as either a two stage attack-decay envelope or a three stage attack-sustain-release envelope.