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EMS Synthi - The Envelope Generator

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In the EMS world, the Envelope Generator is called a "Envelope Shaper".
This is not the only difference.... it's definitely not your usual ADSR envelope generator.



It's actually a Envelope Generator + a VCA rolled into one.
The Synthi's EG has 6 knobs (4 red & 2 silver) & 2 outputs (Trapezoid Out & Signal Out).

The last two silver knobs (5 & 6) are called Trapezoid & Signal.
These set the level of the two outputs.(more about this later).

The first four red knobs are the Envelope Gen (Env Shaper) itself.
They are named: Attack, On, Decay, Off.

1. Attack is what you'd expect.(2ms to 1sec)
2. On = the time the envelope stays at the top level reached during the attack phase.(0-2.5secs)
3. Decay - again what you'd expect (3ms - 15secs)
4. Off = This is like having a built-in LFO. The length of time the envelope is off (between the end      of  the last envelope & the start of the next env)


The knob associated with this "off section" (see picture below) is unusual as it has two ranges/stages.
4a. while in the range of 0-6 we have an automatic retrigger ---
    it will lengthen the automatic off time between 0.5ms to 5 secs


4b. after about level 6 the cycle starts go into manual mode.... to trigger
    the envelope we can use the trigger button that sits next to the joystick.


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