2

To close the graph window
µ
Press Escape (Esc).
Creating Controller Transforms
Using a transform graph, you can remap the values for some MIDI control messages so
that input values from your controller produce different output values for the channel
strip. A common use of the transform is for expression scaling, where input MIDI expression
values are mapped to different output values on a graphic curve.
In addition, you can transform input values for one message type to output values for
another message type. For example, you can transform MIDI volume values from your
controller to send expression values to the channel strip, or transform input breath values
to send modulation values. The transform graph provides a very flexible way of remapping
both the values and the output destination for these MIDI control messages. In MainStage,
you can transform values for expression, modulation, MIDI volume, and breath control
messages.
You choose the input and output message types and graphically create transform curves
in the MIDI Input tab of the Channel Strip Inspector. In a transform graph, the horizontal
axis represents input values from your controller, and the vertical axis represents output
values sent to the channel strip.
To set the input and output message types for a controller transform
1 In the Channel Strips area, select the channel strip for which you want to create a controller
transform.
2 In the Channel Strip Inspector, select the MIDI Input tab.
3 In the Controllers section, choose the input message type from the Input pop-up menu.
4 Choose the output message type from the Output pop-up menu.
Click the Transform button
to edit the graph.
Choose the input and
output message types
from these menus.
59Chapter 5 Working in Edit Mode