EXS24 mkII features two envelope generators per voice, abbreviated as ENV 1 and ENV 2 in the interface and router. For details on the roots of the term envelope generator and its basic function, see Amplifier envelope overview.
The parameters of ENV 1 and ENV 2 are identical.
ENV 1 controls the filter over time.
ENV 2 defines the changes in level over time—for each note played.
Both envelopes, however, are also available for simultaneous use as sources in the router. The envelope time parameters (Attack, Decay, and Release) are also available as modulation destinations in the router.
Attack slider: Define the time it takes for the level of a note to rise from an amplitude of zero to the set amplitude. The Attack time sliders of both envelopes are divided into two halves.
The lower slider half defines the attack time when the keys are struck hard, at maximum velocity. The upper slider half defines the attack time at minimum velocity. Drag the area between the two slider halves to move them both simultaneously. If this area is too small to drag, drag above or below the slider in the control area.
Decay slider: Define the time it takes for the level of a held note to fall to the sustain level after the attack phase has completed.
If the Sustain level parameter is set to its maximum value, the Decay parameter has no effect.
If the Sustain level is set to its minimum value, the Decay parameter defines the duration or fade-out time of the note.
Sustain slider: Determine the sustain level.
Release slider: Define the time required for the sustain level to decay to zero after the key is released.
Time via Key slider: Scale (lengthen or shorten) the envelope time intervals of both envelopes. Note that position C3 is the center point.
Time intervals for zones assigned to keys above C3 can be made shorter with the left slider. Time intervals for zones assigned to keys below C3 can be made longer.
Curve slider: Determine the shape of the envelope attack curve (applies to both envelopes).