There are 2 ways to trigger or “charge” the main envelope
that will produce an audible sound.
The envelope is always discharging at the rate set by the
DECAY knob. The center position of the DECAY knob results
in short, snappy envelopes and turning it counter-clockwise
increases the depth of modulation applied to both pitch and
amplitude, as well as the decay of the modulating envelope.
However, turning DECAY clockwise from the center position
will increase the decay time, but only resulting in amplitude
modulation and no pitch modulation.
The TRIG IN will trigger the envelope with varying intensity
based on how much change in voltage there is at the input.
This will result in accented dynamic rhythms.
The TRIG IN is detecting 3 voltage zones between 0 and
5 volts. Transitioning between zone 1 and zone 3 (or
back) will trigger the envelope with full intensity, however
transitioning through zones 1 and 2 or 2 and 3 will result
in the envelope being triggered with lower intensity and
therefore also shorter decay.
DRUMS
ENVELOPE
TRIG IN
ZONE
3
0V
5V
2
1
NOISES
ENVELOPE
