
Vocal Transformer controls in Logic Pro for Mac
Vocal Transformer includes the following parameters.

Vocal Transformer parameters
Pitch knob and field: Determine the amount of transposition applied to the input signal. See Use Vocal Transformer.
Robotize button: Turn Robotize mode on or off. This mode is used to augment, diminish, or mirror the melody.
Pitch Base slider and field: Available only in Robotize mode. Transpose the note that the Tracking parameter is following.
Tracking slider, field, and buttons: Available only in Robotize mode. Control how the melody is changed.
Mix slider and field: Define the level ratio between the original (dry) and effect signals.
Formant knob and field: Shift the formants of the input signal.
Glide slider and field (Extended Parameters area): Determine the time vocal transformation takes, allowing sliding transitions to the set Pitch value.
Grain Size slider and field (Extended Parameters area): The effect algorithm is based on granular synthesis. Drag to set the size of the grains and thus affect the precision of the process. Experiment to find the best setting. Try Auto first.
Formants pop-up menu (Extended Parameters area): Choose how Vocal Transformer processes formants.
Process always: All formants are processed.
Keep unvoiced formants: Only voiced formants are processed. This retains sibilant sounds in a vocal performance and produces a more natural-sounding transformation effect with some signals.
Detune slider and field (Extended Parameters area): Detune the input signal by the set value. This parameter is of particular benefit when automated.