Ableton/Live/UG/29 Audio Effect Reference/04 Auto Shift/05 Pitch Section
29.4.5 Pitch Section

- Pitch Shift — transposition in semitones; Pitch Shift Fine in cents
- Formant Shift — −100% to 100%. Formants are the resonances that give a sound its character; shifting them makes a voice sound higher or lower without changing its pitch.
- Formant Follow — how much the formants move with the pitch shift; more sounds more natural
- These work with or without pitch correction.