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Pitch pedals in Logic Pro for iPad
Dr. Octave
Dr. Octave is a classic octaver effect with two independent octave controls plus an integrated overdrive.

Octave 1/2 knobs: Set the level of each octave-shifted signal.
Direct knob: Set the balance between the direct and Octave 1 or 2 signals.
Drive knob: Set the amount of saturation applied to the output signal.
Wham
Wham is a pedal-controlled pitch shifter.

Pedal Position control: Adjust the pedal position and therefore the intensity of the effect.
Tune knob: Set the frequency.
Mix knob: Set the level balance between the source and pitch-shifted signals.
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