Dave Smith Instruments Sequential PROPHET X, User Manual

Page: 67 / 172

55 Prophet X User’s Guide Modulation
Modulation
Although the overall sonic character of the Prophet X is determined
by its samples, oscillators, and filters, much of its power to make truly
unique sounds comes from creative use of modulation. Modulation is
the process of routing one parameter (i.e. a control voltage) to another in
order to change the way the targeted parameter behaves.
Destination Edit Mod 1 Source Amount
Sort Source Slot Sort
Mod 1
Mod 2
Mod 3
Mod4
Slider 1
Slider 2
Aftertouch
Mod Wheel
60
35
25
80
Cutoff
Osc1 Shape
Drive
LFO1 Amt
Sort Dest
The Modulation Matrix
The concept is simple:
1. Choose a source.
2. Choose a destination.
3. Set an amount. The amount can either be positive or negative.
You already understand and apply the concept of modulation whenever
you use the filter envelope to control the filter’s cutoff frequency. In this
case, the modulation source is the filter envelope (or more precisely, any
of its controls, such as attack, decay, sustain, or release). The modulation
destination
is the filter’s cutoff frequency. The modulation
amount
is set
with the
env amount
knob.
There are 28 different modulation sources and 88 different destinations
to choose from. (See “Appendix A:
Modulation Sources” on page 130 for a complete list.) There are 16
freely assignable modulation paths (mod slots 1-16) as well as 11 addi-
tional dedicated mod sources including the Mod Wheel, Pressure (after-
touch), Breath Controller, Velocity, and MIDI Footswitch. This gives you
a large number of sound-shaping options.