An Auto Wah pedal (or Envelope Filter) automatically creates a "wah" sweep by reacting to the input signal's volume, or "envelope," making a manual foot treadle unnecessary. Top pedals like the Boss ...

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 ...

The wah pedal has been responsible for some truly iconic moments in electric guitar; that 'talking' sound you've heard from players including Jimi Hendrix and Richie Sambora on classic songs. Listen ...