The EG-01 is a standard attack, decay, sustain, decay envelope generator.
The attack knob changes the attack phase time from 1 ms to 10 seconds.
The decay knob changes the decay and release phase times from 1 ms to 10 seconds.
The sustain knob changes the level that the envelope remains after the decay phase.
Gate signal input to trigger envelope.
Envelope output (0.0 - 1.0 volts).
The EG-01 has the same phases as an attack, decay, sustain, release envelope, with the exception that the decay and release times are controlled with a single decay knob.