Pitch Shifter is used most effectively when you take a structured approach.
To set the amount of transposition, or pitch shift, drag the Semi Tones slider.
To set the amount of detuning, drag the Cents slider.
To select the algorithm that best matches the material you are working with, click the Drums, Speech, or Vocals button.
If you are working with material that does not fit any of these categories, experiment with each of the algorithms (starting with Speech), then compare the results and use the one that best suits your material.
Tip: While auditioning and comparing different settings, temporarily set the Mix parameter to 100% because this makes Pitch Shifter II artifacts easier to hear.