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Pitch Shifter

Pitch Shifter

 A pitch shifter raises or lowers (e.g. "transposes") each note a performer plays by a pre-set interval. For example, a pitch shifter set to increase the pitch by a fourth will raise each note four diatonic intervals above the notes actually played. Simple pitch shifters raise or lower the pitch by one or two octaves, while more sophisticated devices offer a range of interval alterations. A harmonizer is a type of pitch shifter that combines the altered pitch with the original pitch to create a two or more note harmony.