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A Trapezoid Envelope module with included VCA. Featuring flexible linear and logarithmic slopes for both the attack and decay phases, voltage-controlled decay time, plus options for gated or fixed on stage, and single-shot, repeating or gated repeat mode, the module takes the ideas from the EMS VCS/Synthi and allows even more creativity.

The module also includes a simple VCA path to allow easy use of the envelope with audio or control signals, which has optional linear or exponential CV modes as well as smoothing options including Zero-Crossing processing to reduce clicks when audio processing.

Annotated image of Trapezoid Envelope VCA module with description of controls
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