Doc v15XL
29
Doc v15XL
Modifier Example: Controlling a Wah
For this example, we assume that the controller called “EXT 1” is set to its default value in the I/O:CTRL page, and
that we have connected a MIDI foot controller with an expression pedal that is set up to send this same message
on the correct MIDI channel. (In fact, this is the default setting for the EXPRESSION PEDAL 2 jack on the MFC-101).
If you don’t have an MFC-101, you can connect an expression pedal directly to the Axe-Fx PEDAL jack. You’ll need
to calibrate it (under I/O:PDL) and change “EXT CTRL 1” from CC#16 to “PDL” (under I/O:CTRL).
1.
To start, a
WAH
block is inserted or selected on the grid.
2.
Press
to open the WAH block EDIT menu.
3.
The modifier symbol
beneath the
CONTROL
knob indicates that a modifier can be added here.
Select the CONTROL parameter and press
to open the MODIFIER screen.
4.
Change the
SOURCE
to “EXTRN 1” to “attach” it to our parameter. The wah pedal starts working!
“Follow the bouncing ball” as the dot on the graph follows the motion of your foot on the pedal.
If we change the modifier
SOURCE
to “ENVELOPE,” our wah is disconnected from the pedal and becomes
controlled instead by the level of the input signal to create a “touch wah”. Note that you can fine tune the
envelope response on the CONTROL:ENV page.
Changing the source to one of the LFOs, creates an oscillating “auto-wah.” Externals, Envelopes, LFOs, and other
sources are detailed below in section
For more about Modifiers, see the Axe-Fx II Owner’s Manual available on our web site.
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