Dual ADSR 3U

Snappy, classically analog envelopes with visually intuitive controls. Add trigger buttons, cycling and a variety of control voltage outputs—then double it—now you've got the Dual ADSR.

We tend to prefer sliders for our envelope generators because they provide a clear visual representation of the modulation shape. This circuit is based in part on the Roland SH-101 / System 100m design with several enhancements.

Features

• Manual GATE buttons to trigger the two envelopes

• Three timing ranges: (FAST: 1 second, MED: 10second, SLOW: 1minute A/D times)

• Normal and inverted outputs

• End of Decay (EOD) logic output

• Cycle mode (which GATE in controls, to allow cycling during held gates)

• Retrig input (allows re-triggering of the envelope if source gate held high)

• Dynamic control of the envelope output level.