AI Synthesis AI003 Looping ADSR Envelope Generator Silver

The Looping ADSR Envelope Generator from AI Synthesis is a Eurorack-compatible take on a classic design from the Electro-Music.com forums (with permission from original creator Nicholas of Christchurch, NZ) with some additional tweaks made by Dave Brown. It can be run as a gated/triggered ADSR 4-stage envelope generator or as a looping Attack-Release envelope with exponential slopes. Additional features include a retrigger input and a button for triggering by hand.

The module actually has quite a few modes of operation, most of which depend on whether a patch cable is plugged into the Gate input. For example, when in looping mode but with no cable plugged in, the envelope will continuously loop; if a cable IS plugged into the Gate input, the module will loop only while there’s a HIGH gate present. A full manual detailing possible combinations is available here.

Compared to the Erica Envelope Generator, which features relatively short Attack times and longer Decay/Release times, this AI Synthesis envelope has relatively longer Attack times and shorter Release times, with longer cycle times possible overall. The longer Attack stage allows for a wider variety of basic waveform types (sawtooth, triangle, ramp, etc.) to be generated in looping modes, which is useful for modulating certain types of parameters.

Specs:

•  Size: Eurorack/8HP
•  Depth: 37 mm (w/o cable)
•  Output range is 0V~+7.5V
•  Attack: 20ms min. 14s max.
•  Decay: 10ms min. 20s max.
•  Release: 100ms min. 7s max.
•  Current Draw: 15mA@-12V, 15mA@+12V

Exact components may vary from module to module, as each unit is tuned individually. Each module has been rigorously tested and as such, fingerprints and slight blemishes may be present (though we do our best to avoid these!). Depth and current draw measurements are approximations intended to help with planning your Eurorack setup; please allow for additional space/current to allow for a margin of error.