Guitar+Wah-Wah+Pedal

=Guitar Wah-Wah Pedal= toc =Eric Botto=

Purpose
//The purpose of a Wah-Wah Pedal is to create a swelling effect by modulating the bass and treble frequencies when you pivot the pedal back and forth.//

Energy
//Usually the pedal is battery or AC powered. The only reason this is necessary is because through the process of running through a lot of wire and switches, the original energy produced by the pickups is lost and the battery provides a small amount of amplification. This miniscule amount of amplification does not replace the Guitar Amplifier in emitting sound from a speaker.//

Controls
//The sound of the Wah-Wah is produced by pivoting a pedal back and forth which is actually moving a potentiometer which in turn is varying the amount of treble and bass frequencies sent to the amplifier. If the switch is in one position, no "wah-wah" sound is produced, it is kept at a constant tone. It is the pivoting of the pedal which actually creates the "swelling" sound heard on many recordings.//

Materials
//Wah-Wah pedals are usually made of a strong metal case, and inclosed, are circuit boards or hand-wired components such as potentiometers, switches, capacitors, transistors and transformers.//

Science
//Modulating electrical waves by way of transistors, potentiometers and switches.//

Design
A wah wah pedal looks like a metal box with a pivot in the middle.

Evolution
Over the past 50 years, there have been very little changes in the workings of this device. The only differences are that some companies wire the circuits uniquely to the sound they are trying to achieve.

Competitors
//Auto-wah, phaser, and the TalkBox®//

Partners
//Electric guitar, guitar amplifier, guitar multi-effects pedals//

Siblings
//Auto-wah//