Diagram of normal sinus rhythm as seen on ECG. In atrial fibrillation the P waves, which represent depolarization of the top of the heart, are absent.
The wah-wah pedal is based on a simple concept but its effect is far more dramatic. Using a powerful filter to sweep through a broad frequency spectrum, the wah pedal boosts and exaggerates specific tones. Creating sounds that range from thick, flubbery bass to scratchy, stinging treble.
These additions will benefit players of all genres who use a wah pedal as an integral part of their sound. About the Wah-Wah. VOX developed the world's first Wah-Wah effect during the '60s in an effort to allow guitarists to emulate the sound of a trumpet being muted-an important musical ingredient of the day.