Avid Technology Xpand!, Manual

Page: 15 / 38

Chapter 3: Operate Xpand! 11
Pressure Controls
Many MIDI keyboards provide pressure (also
called aftertouch) to generate a MIDI control
signal which depends on how hard you press
down held keys after the initial “note on.”
With Xpand! you can use this control signal to
modulate a number of useful controls.
Destination
Select a destination for the modulation by your
MIDI keyboard’s pressure from the pop-up list:
Depth
This knob sets how much the signal is affected
by the pressure control signal. Depth is a bipolar
control, which means that it can be set to posi-
tive and negative values.
Destination Description
Pitch Affects the Part’s pitch.
Wave Changes the sound based on its
Part. For example, shaping wave-
forms, FM modulation depth,
sample start point offset, detun-
ing.
Filter Affects the Part’s filter cutoff fre-
quency.
Volume Affects the Part’s volume level.
For example, with destination set to Filter,
applying aftertouch increases (positive
Depth value) or decreases (negative Depth
value) the filter cutoff frequency.