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Create your Own MIDI Controlled Wah Pedal
on Sunday 05 November 2006
by Guillaume Jeulin author list print the content item {PDF=create pdf file of the content item^plugin:content.145}
in Music Software - Pro
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by Guillaume Jeulin
Blue Cat Audio

This tutorial will help you create your own MIDI controlled Wah pedal and customize its parameters to match an existing Wah pedal or create a brand new virtual one: yours. You can use this custom wah pedal with your guitar, but it is also very useful with an organ or a synthesizer (remember: in the good old days, many hammond organ players had fun with Wah pedals). This tutorial uses Cakewalk Sonar 5, but it is applicable to any other VST or DirectX host software.

Step By Step

01- Connect the MIDI output of your foot controller to the MIDI in of your computer, launch and setup your host software:
Image: _pedal/01.png

02- Insert the Triple EQ plug-in on the guitar track:
Image: _pedal/02.png

03- On a MIDI track, assign the output to the Triple EQ plug-in (for all channels):
Image: _pedal/03.png

04- Go back to the Triple EQ plug-in and right click to open the presets settings:
Image: _pedal/04.png

05- Uncheck the \'use global settings\' option:
Image: _pedal/05.png

06- Activate the frequency parameter and click on \'learn\':
Image: _pedal/06.png

07- Move your MIDI controller:
Image: _pedal/07.png

08- The right MIDI channel and CC number have been automatically assigned (if not, check your MIDI connections and assignments):
Image: _pedal/08.png

09 - Set the min and max frequency values for your wah (depends on the wah effect you want to simulate but 280-2k Hz is a good example):
Image: _pedal/09.png

10 - Set the response curve to \'Slow 4\' (We want the MIDI controller to follow the logarithmic curve of our ear\'s frequency sensitivity):
Image: _pedal/10.png

11 - Click on \'OK\' to save changes, the MIDI setup is now complete:
Image: _pedal/11.png

12 - Adjust the Triple EQ parameters - boost the Mid to max and the Low and High bands to Min, the BW should be set from 2 to 4 octava, and adjust the input gain to avoid clipping:
Image: _pedal/12.png

13 - Enable \'audio input echo\' on the track in order to hear the sound (do not forget to mute all audio inputs in your soundcard settings, or you will hear the dry sound too):
Image: _pedal/13.png

14 - Your wah pedal is now setup, move your foot and play:
Image: _pedal/14.png

15 - Improvements - customize the bandwith of the wah pedal:
Image: _pedal/15.png

16 - Improvements - for a lighter wah effect, reduce the difference between the mid boost and low,high cut:
Image: _pedal/16.png

17 - Improvements - in the preset MIDI settings, you can adjust the min and max frequency values of the wah pedal:
Image: _pedal/17.png

18 - Improvements - in the preset MIDI settings, assign the Bandwith parameter to the same controller (real wah pedals may have a variable bandwidth):
Image: _pedal/18.png

19 - Improvements - customize the Wah pedal response curve to match your foot feelings. You will usually use the \'linear\' to \'slow5\' range:
Image: _pedal/19.png

You can now enjoy your own real time Wah pedal. You may want to have a look to our other Tutorials to learn how to record automation from your foot controller and manually adjust the resulting envelope, so that the wah movements match your song perfectly.

Blue Cat Audio develops audio software for musicians and audio professionals. Our products portfolio contains VST and DirectX plug-ins for PC. See the Products section to browse the catalog. Benefit from our unique native DSP platform and enhance your creativity!

Blue Cat Audio also provides software development services for musicians and audio professionals. See the Services section for more information.

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