harmonizer

A harmonizer is an effects device or pedal type that creates pitch-shifted harmonies from the input signal. The Beetronics Swarm, for example, is a square-wave fuzz harmonizer that multiplies and divides the signal's frequency to create pitch-shifted layers and modulated chaos¹. Harmonizer functions also appear combined with other effects, as in the Catalinbread Coriolis Effect, described as a sustainer, wah, filter, pitch shifter, and harmonizer rolled into one², and the FOMOfx Virtual Jeff, labeled a pitch shifter, octaver, and harmonizer³. Eventide is closely associated with the name, with processors such as the H910, H949, and H3000 Harmonizer units⁴, and the H9 Harmonizer pedal, which can run all of Eventide's stompbox effects⁵.