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.
Chorus: A Chorus pedal is essentially just short, modulated BBD delay (5 to 25 milliseconds) that is mixed back in with the original signal. The modulated delayed signal interacts with the original producing frequency cancellations that create a watery sort of effect.