The modulation envelope can directly modulate the parameter chosen in the router. It determines the time it takes for the modulation to fade in or fade out. At its center position (click Full), modulation intensity is static—no fade-in or fade-out occurs. When set to its full value, modulation intensity is at a constant level.
The modulation envelope allows you to set either a percussive type of decay envelope by choosing low values or an attack type of envelope by choosing high values.
Form dial and field: Set a fade-in (attack) or fade-out (decay) time for the modulation. When set to the full position, the modulation envelope is turned off.
Int via Vel sliders: Set the top arrow to define the upper modulation envelope limit for the hardest keystrike (velocity=127). The bottom arrow sets the lower limit for the softest keystrike (velocity=1). The green bar between the arrows displays the impact of velocity sensitivity on the intensity of the modulation envelope.
You can simultaneously adjust the modulation range and intensity by dragging the green bar, thus moving both arrows at once. Note that as you do so, the arrows retain their relative distance from each other.
Select a modulation target, such as Pulse Width, from the right column of the router.
Set the Form slider to full, and adjust the Int via Vel parameter as needed.
This results in a velocity-sensitive modulation of the oscillator pulse width.
More interestingly, you can directly control the LFO level if you click the LFO Amp(litude) button in the right column of the router.
To fade in the LFO modulation: Drag the Form slider to a positive value—toward attack. The higher the value, the longer it takes for you to hear the modulation.
To fade out the LFO modulation: Drag the Form slider to a negative value—toward decay. The lower the value—closer to decay—the shorter the fade-out time is.
LFO control with envelopes is most often used for delayed vibrato, a technique many instrumentalists and singers employ to intonate longer notes.
Drag the Form slider to the right—toward attack.
Select Pitch as the LFO target in the left column of the router.
Use the Wave knob to select the triangular wave as the LFO waveform.
Drag the Rate field to an LFO rate of about 5 Hz.
Drag the upper Int via Wheel arrow to a low value, and the lower arrow to 0.