Elby Designs - IF114 [Eurorack 3.5mm]

This novel envelope generator provides a versatile alternative to other designs. It consists of two parts - the main AD/AR envelope generator itself and an auxiliary delayed pulse generator. The pulse generator output can be used as a trigger or gate to control the main envelope circuitry, or it may be used independently as an external timing/gating signal.  The circuit has four input modes and four output signals. Hence its name. In the ordinary AD/AR mode the main input is used. It will take just about any signal you feed it. Driven by a trigger pulse, the unit's output is an attack-decay (AD) envelope. Driven by a gate its output is an attack-release (AR) envelope. And you can even use a continuous signal like an LFO for the gate. Cycle mode: A pulse is generated at the end of the envelope decay/release and can be switched back to the input to produce a repetitive AD output signal. Manual trigger mode: A momentary push button switch on the panel generates an input trigger pulse to g