Korg PS 3200 - 4. Envelope Modifier (EM)

The PS3200 has lots of envelopes.
This can be very confusing at first.

The most obvious one to explore is the EM. This is directly to the right of the filter.
It's a combination of VCA & EG (envelope generator).
The VCA varies the volume of the sound coming from the filter.
It is voltage controlled by the ADSR .envelope.
The envelope is triggered whenever a key is pressed.
(on the keyboard).

There are also some external jacks.
So external controllers (like a PS-3040) ... for the attack.
or a RS-3040 for the release.
I think you can also use a S-type foot switch ???

tHESE  external S-triggers (for the release) start high (+5V & short to ground).
Moog & Yamaha also use such triggers.... worth experimenting.
The attack is interesting ... a -5V to +5V signal.
The overall VCA is controlled by a 0V to +5V signal.

Above these jacks is a modulation balance knob.
It appears that just like the SG & filter,   the MG-1 & S/H  can modulate this VCA.

A secondary function of the EM:
The EM  (envelope modifier) envelope signal also effects the Fc of the filter
This is an impt concept to grasp.
Because the ADSR envelope is tied to both the VCA and the filter, an EXPAND effect is produced.
The Expand knob is part of the filter section.