Quantize the pitch of notes in the Audio Track Editor
When Flex Pitch is turned on in the Audio Track Editor, you can quantize, or automatically correct, the pitch of notes on an audio track. This is especially useful when you record audio regions that have the right “feel” and timing but are not perfectly in tune.
When you quantize the pitch, selected notes on the track are adjusted. Quantizing the pitch can produce accurate results only for single-note (monophonic) audio regions, so be sure the track does not include regions with chords or unpitched sounds.
By default, notes are adjusted to the closest note on the chromatic (12-note) scale. You can also quantize regions to the notes of a particular key or scale.
Quantize the pitch of notes on an audio track
Click the Show/Hide Flex button in the Audio Track Editor menu bar.
Choose Flex Pitch from the Flex pop-up menu in the Audio Track Editor menu bar.
Select the notes you want to quantize.
Drag the Pitch Correction slider to the right to increase the amount of tuning adjustment, or drag it left to decrease the amount of adjustment.
To quantize the pitch of notes to a particular scale, choose the scale and key (major or minor) from the Scale Quantize pop-up menus.
For more information about Flex editing, see Flex Time and Pitch overview.