The Poly Mini Envelope VCA Plus is a poly version of the Mini Envelope VCA, a mini form-factor Delay, Attack, Hold, Decay, Sustain, Release envelope generator with an included dual VCA module and the including the ability to set long envelopes (5 minutes for each stage), a sustain pedal input as well as some less common CV output forms.
All times are set using standard 0 to 12 second controls (with mid-point setting) plus a 0 to 300 second coarse control (in 10 second steps). The envelope can also be set to be triggered in one-shot or looping Delay-Attack-Hold-Decay mode and has End of Decay and End of Sustain trigger outputs.
The sustain pedal and gate input default to the IO Panel for easier patching (the sustain pedal input can be disabled) and retriggering options allow full legato (no retrigger during sustain), normal retrigger during sustain (default) and hard retrigger with return-to-zero. The retrigger can be set to start a new Delay or go straight to the Attack stage.
The Dual Voltage Controlled Amplifier section can allow two independent signals (including stereo audio signals) to be controlled by the envelope, with either Linear or Exponential control, and they both have a Zero Crossing mode that removes clicks when using very fast envelope settings.
Typically, the two DAHD (always complete and looping) modes would be used with 0% sustain and Release either 0ms or matching the Decay setting – but it is not limited to these, so that the always complete can be used both for percussive envelopes but also in a manner similar to the ENV-20 EG2 behaviour, providing a minimum time for the envelope. The following illustrations show these behaviours.