Pitch Correction quantization in Logic Pro for Mac
The Neural Pitch Detection button should generally be left on to handle pitch tracking. When Neural Pitch Detection is turned off, you can use the Pitch Range pop-up menu to set the pitch range that is scanned. Normal is the default range and works for most audio material. Low should be used only for audio material that contains extremely low frequencies (below 100 Hz), which may result in inaccurate pitch detection. These parameters have no effect on the sound; they are simply optimized tracking options for the chosen target pitch range.
The Scale/Chord pop-up menu allows you to choose different pitch quantization grids. The default setting is the chromatic scale.
The user scale is the scale that is set manually with the onscreen keyboard in the plug-in window. If you’re unsure of the intervals used in any given scale, choose User Scale from the Scale/Chord pop-up menu and look at the onscreen keyboard. You can alter any note in the chosen scale by clicking the keyboard keys. Any such adjustments overwrite the existing user scale settings.
There is only one user scale per project. You can, however, create multiple user scales and save them as Pitch Correction plug-in settings files.
Tip: The drone scale uses a fifth as a quantization grid, and the single scale defines a single note. Neither of these scales is meant to result in realistic singing voices, but try them if aiming for interesting effects.
Choose the root note of the scale from the Root Note pop-up menu. You can freely transpose the major and minor scales and scales named after chords.