A few years back, I explained how to play a “round” using only the Akai EWI’s onboard synthesizer by editing a sound to include an echo. I mentioned some limitations of this technique, and hinted that an external device would be needed for better flexibility.
The problems with my original technique are that you have to determine your precise tempo ahead of time, and you don’t have any flexibility to change it on the fly. You also can’t easily change your mind about the sound that you want—if you decide you really wanted something flutey instead of something brassy, you have to edit another sound. If you want to play several pieces or movements at different tempi, you need to dedicate a separate voice to each one. You also get a maximum of 1.27 seconds of echo. For my recent recital, I wanted the flexibility of playing multiple movements and changing my mind about sounds, and I needed a longer delay time for a slow movement.
At the time of my original tutorial, I assumed that the external device needed would be some kind of looper, but upon further exploration I have actually found a digital delay pedal to be the best way of accomplishing the effect. I am using the ubiquitous Boss DD-7, used by many electric guitarists, but presumably these instructions can be adapted to other similar gadgets (you are on your own to work out the details). I also used an auxiliary pedal, the Boss FS-5U. This simplifies things slightly on stage if you want to be able to turn the echo on and off quickly, but it’s totally optional. I’ll tell you how to make this work with or without it.
Here are the important settings:
- Plug the EWI into the “A” input, and the amplifier into the “B” output. This configuration puts the DD-7 in “Long” delay mode, which provides up to 6.4 seconds of delay.