This one is by request for Kfliegner and Yek. Seems no one has nailed
the elusive U2 “Mysterious Ways” Korg A3 “FunkWah” sound. I did some
poking around at other people’s attempts and now I see why no one is
quite getting it right.
There is a programming trick to it. Not a hard one. You don’t need a Wah
block or multiple filters. The secret is:
You must tie both the Frequency and “Q” parameters of your Lowpass filter
to an envelope controller AND you must invert the two envelope slopes relative to eachother.
Slope = 0% on the Frequency envelope, slope = 100% on the ‘Q’ envelope. This will
cross their response curves, creating a ‘notch’ and give you the correct, hard “Wow”
response on the envelope.
You must also hit the strings hard enough, and close to the bridge. A little practice
will give you the hang of it. The first time you hit it right, you’ll hear the “Wow”.