Envelope Generator

Envelope, LFO

The Envelope Generator is a simple rise and fall envelope with highly useful features. The START input acts as the trigger input, allowing the envelope to cycle, allowing the envelope to start and complete its full cycle. The envelope will not reset if the cycle has not been completed, offering some really great possibilities for abstract enveloping. When a high gate is sent to the CYCLE input, it allows the envelope to cycle as a momentary LFO, depending on how the rise and fall settings are set. There is also a HOLD input that will freeze the envelope in its current state, like a sample/hold input for the envelopes output. At the end of each cycle the envelope will send a high gate at the END output for gating any external source, or even gating itself to create a constant cycling LFO.

https://prismcircuits.net/products/serge-envelope-generator