Octave effect

Octave effect boxes are a type of special effects unit which mix the input signal with a synthesized signal whose musical tone is an octave lower or higher than the original.

Creation of the octave

Use of octave effects

Octave pedals can be used in conjunction with fuzz and/or distortion. It can be used on guitar to make it sound more aggressive or sound like a bass. CKY are well known for using octave effects in their music, most notably the song "96 Quite Bitter Beings". The song "Seven Nation Army" by The White Stripes features an octave pedal on electric guitar, simulating the sound of a bass.