The wah-wah pedal makes a guitar sound as though it's singing "wah, wah, wah." The effect was a staple of 1960s psychedelic rock: Jimi Hendrix bent reality with it in classics like "Voodoo Child ...

A version of this piece orginally appeared on The Week. Jimi Hendrix making his guitar "talk." Peter Tarnoff/Retna Ltd./Corbis The wah-wah pedal makes a guitar sound as though it's singing "wah, wah, ...

A group of former Purdue University students is trying to patent and license the “Ghost Pedal,” which uses sensors to detect the position of a guitarist’s foot and simulate a physical wah pedal based ...

A pedal for David Gilmour superfans to play around with his oscillating caw effect, but also for disciples of Michael Schenker’s cocked wah sound When you purchase through links on our site, we may ...