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.
A loop pedal is an effects pedal, usually for guitar, that can record a section of sound played on the instrument. It then plays back that section over and over, or for a set amount of repetitions.These can be useful when there is only one guitar player in a band that wants to play rhythym and lead guitar.he do loop is similar to the while loop, except that the expression is not evaluated until after the do loop's code is executed. Therefore the code in a do loop is guaranteed â¦ to execute at least once.