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.
When you want to control the sound of your guitar on the fly, your pedals are the way to go. From adding effects to managing your signal routing, there's a pedal for everything. Some of the most basic, yet powerful, of these are volume and expression effects pedals.Despite their simplicity, these pedals can have a huge impact on your performance.igh-quality pedals with metal construction are the norm, so you won't have to look far to find a pedal that can take some punishment. Your volume and expression effects pedals put the most important characteristics of your sound directly into your control.