Pitch Shift
The Pitch Shift effect shifts the frequency spectrum of the input signal. It can be used to disguise a person's voice, or make the voice sound like that of the "chipmunks", through to "Darth Vader". It is also used to create harmony in lead passages, although it is an "unintelligent" harmonizer.
In the Properties Window you can change the effect properties. It's possible to select the necessary preset from the dropdown list or set a custom Rate value.