34
35Modulation
Sequential Prophet Rev2 User’s Guide
Modulation
Modulation Parameters
Source: Selects a modulation source. The are twenty-two different
modulation sources. See page 72 for a complete list.
Destination: Selects a modulation destination. The are fty-three differ-
ent modulation destinations. See page 73 for a complete list.
Amount Sets the modulation amount. Modulation can be either positive
or negative.
Modulation Examples
Below are several modulation scenarios that illustrate how to use the modu-
lation matrix. The examples provide full, step-by-step instructions for clarity.
In actual practice, there are shortcuts for routing modulation to various
front panel sources/destinations. Simply hold down the source button
and move the control you want to use as a source (the mod wheel, for
example). Then hold down the destination button and move the control
that you want to use as a destination (lter cutoff, for example). Set
the amount using the parameter and value knobs next to the display.
Be aware that not all front-panel controls can be used as a modulation
sources/destinations.
To use the mod wheel to add vibrato:
1. In the low frequency oscillators section, set LFO 1 to triangle and
set frequency to 75. Set destination to osc all freq. Set amount to 0.
(You will control the amount with the mod wheel.)
2. In the modulation section, press the source button. Use the param-
eter knob next to the display to scroll to Mod Slot 1 if it’s not already
displayed.
3. Use the parameter knob to select the source eld. Use the value knob
to scroll through the various mod sources and choose mod wheel
4. Use the parameter knob to select the amount eld. Use the value knob
to set the amount to 30.
5. Use the parameter knob to select the dest eld. Use the value knob to
scroll through the various mod destinations and choose lfo1 amt.
6. Hold down a note on the keyboard and turn the mod wheel. You should
hear vibrato.
Use pressure as the modulation source instead of the mod wheel in the previ-
ous example to add vibrato with key pressure/aftertouch.
To use the mod wheel to control the lter cutoff:
1. In the modulation section, press the source button. Use the parameter
knob next to the display to scroll to Mod Slot 1 if it’s not already displayed.
2. Use the parameter knob to select the source eld. Use the value knob
to scroll through the various mod sources and choose mod wheel.
3. Use the parameter knob to select the dest eld. Use the value knob to
scroll through the various mod destinations and choose cutoff.
4. Hold down a note on the keyboard (or press the hold button and play a
note on the keyboard) and turn the mod wheel.
5. Use the parameter knob to select the amount eld. Use the value knob
to set the amount to your preference. Higher amount settings cause the
lter to open wider the further you push the mod wheel. A negative
amount setting will close the lter the further you push the mod wheel.
Use pressure as the modulation source instead of the mod wheel in the previ-
ous example to open the lter (positive amount) or close the lter (negative amount)
with key pressure/aftertouch.
Other modulation ideas:
• Route env 3 to osc all freq to create a rising or falling pitch effect each
time your press a key. This technique is often used to create the “attack
pitch blip” effect in classic synth brass sounds.
• Route an LFO to pan to create an auto-panning effect. Panning width is
controlled by the modulation amount. Panning speed is controlled by
the LFO frequency. Add a second mod path to control the LFO speed
with the Mod Wheel for a faux rotating speaker spin-up/spin-down
effect. Enable the chorus effect and set up a third mod path to control
fx mix with the mod wheel for even better results.
• Route the mod wheel to osc mix and set Oscillator 1 and 2 to different
frequencies and/or waveshapes. Then transition between them with the
mod wheel. Set osc 1/2 mix to 0 and mod amount to 127. This is one
way to simulate a guitar feedback effect, especially on sounds that use
the distortion effect. Oscillator 1 could be the main tone and Oscillator
2 could be the “feedback harmonic.” Set up a second mod path to also
add vibrato with the mod wheel.
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