User Manual

60 Adding Aftertouch Dave Smith Instruments
Adding Aftertouch
Aftertouch is a performance feature that allows you to add modulation to
a sound by applying additional pressure to a key after the key is already
down. The greater the pressure applied, the more modulation is applied.
The Prophet Rev2 provides monophonic (or “channel”) aftertouch,
which means that applying pressure to any key within a chord will apply
modulation to all notes currently held.
The
modulation section lets you choose the amount of modulation
applied using aftertouch and also which parameters are modulated (oscil-
lator frequency, lter frequency, etc.). You can set either a positive or
negative amount.
For example, if you select the lter cutoff as modulation destination
(
cutoff), set a positive amount of pressure, then press the keys harder,
the lter cutoff frequency will increase, making the lter open wider and
the sound become brighter.
Conversely, if you select the lter frequency as destination, set a nega-
tive amount of pressure, then press the keys harder, the lter cutoff
frequency will be lowered, making the lter close more and the sound
become more muted.
To choose aftertouch (pressure) as a source for modulation:
1. 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.
2. Use the parameter knob to select the source eld. Use the value knob
to scroll through the various mod sources and choose pressure.
3. Use the parameter knob to select the dest eld. Use the value knob
to scroll through the various mod destinations and choose a parameter
(such as cutoff).
4. Hold down a note on the keyboard. Then, press harder.
5. Use the parameter knob to select the amount eld. Use the value
knob to set the amount to your preference. Higher amount settings
add greater modulation the harder you press a key. A negative amount
setting will apply modulation in the negative direction.