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Chapter 5 Work in Edit mode 64
Create controller transforms
Using a transform graph, you can remap the values for some MIDI control messages so that input
values from your controller produce dierent output values for the channel strip. A common use
of the transform is for expression scaling, where input MIDI expression values are mapped to
dierent 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 exible 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.
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.
Open the Transform graph
m In the MIDI Input tab of the Channel Strip Inspector, click the Transform button.
If a patch contains more than one channel strip with a transform graph, the transform curves for
the other channel strips in the patch appear in the controller Transform graph window behind
the current curve. Each channel strip in the patch can have its own controller transform.
For information about editing the graph, see Work with graphs on page 62.