Scientific pitch notation creates a linear pitch space in which an octave spans 12 semitones, where each semitone is the distance between adjacent keys of the piano keyboard. Distance in this space corresponds to musical pitch distance in an equal-tempered scale; 2 semitones being a whole step, 1 semitone being a half step. An equal-tempered semitone can also be subdivided further into 100 cents. Each cent is semitone or octave. This measure of pitch allows the expression of "microtones" not found on standard piano keyboards. The notation is sometimes used in the context of meantone temperament, and does not always assume equal temperament
Octave effect as long as the input signal was strong and then continued generating the same frequency while that input signal faded. Octave pedals can be used in conjunction with fuzz (see octafuzz) and/or distortion. It can be used on guitar to make it sound more aggressive (such as the lead-in solo by Prince on When Doves Cry) or sound like a bass. The song Seven Nation Army by The White Stripes features an octave pedal on electric guitar, simulating the sound of a bass. Octave effect Octave effect boxes are a type of special effects unit which mix the input signal