
109Filter Effects
Implementation
Filter Design
As with equalization, wah- wah nearly always uses second- order IIR lters.
Two of the lter types used in the wah- wah are the same as those found
in the various types of equalizer. The peaking/ notch lter is used in the
WAH- WAH AND WACKA- WACKA
The wah- wah effect is incredibly expressive. It is associated with whole
genres of music, and it can be heard on many of the most inuential
funk, soul, jazz, and rock recordings over the past 50years.
Jimi Hendrix would sometimes use the wah- wah effect while leav-
ing the pedal in a particular location, creating a unique lter effect that
did not cha ...