Guitar Effects: Pitch Shifter, Octave, and Harmonizer

Pitch Shifters, Octave, and Harmonizers alter the pitch of the guitar's signal to create their effect.

Octave or Octaver effects combine the guitar's signal with a duplicated signal raised or lowered an octave in pitch, creating a synthesizer type of sound. Both guitarists and bassists sometimes use octave effects to create a lower ranger and thicken up their tone.

Pitch Shifter effects alter the pitch of the guitar's original signal to create detuned and other pitch effects not limited to just an octave up or down from the original sound. Some pitch shifting effects can be used with an expression pedals.

Harmonizer effects work similarly allowing one guitar to sound as multiple guitars playing in harmony.