Apple Logic Pro 9 - Manual (Page 635)

This triggers a process where quantize markers are automatically placed on top of the
existing transient markers. You can easily differentiate between quantize markers and
normal flex markers, as quantize markers don’t have an orange handle at the top.
6 Remove tracks that shouldn’t be referenced for quantization by doing one of the following:
• Turn off the Q button in the track header.
• Select the track, and deselect the Q-Reference checkbox in the Inspector’s Track
Parameter box.
Although these tracks are still phase-locked with the other members of the group, their
transient markers will not be taken into account during the quantization process.
All tracks that are part of the edit group that have their Q button turned on will contribute
their transients for audio quantization. At this point, the position of the quantize markers
is the same in all tracks—meaning that the quantization will be phase-locked.
7 To complete the quantization process, open the Quantize pop-up menu in the Inspector’s
Region Parameter box, and choose a Quantize value.
Quantizing MIDI Regions Permanently
In the same way that other region parameters can be normalized, the quantization settings
can also be applied permanently to one or more regions. The Apply Quantization Settings
Destructively function is especially well-suited to pre-quantization.
For example, if a recorded MIDI region cannot be quantized to a 16D Swing value without
producing a few incorrectly timed notes, quantize it to 1/16 notes and then use Apply
Quantization Settings Destructively. You can now use swing quantization on this
cleaned-up version of the MIDI region.
Another example: If you are recording a hi-hat pattern consisting of 1/16 notes and one
single 1/32 note, first play the rhythm (quantized to 1/16 notes) without the 1/32 note
and choose Apply Quantization Settings Destructively. You can now raise the Quantization
parameter value to 1/32-Note and add the extra note without incorrectly quantizing any
badly played 1/16 notes.
To permanently quantize a region
1 Choose the desired quantization settings—including extended region parameter quantize
options, if desired.
2 Choose MIDI > Region Parameters > Apply Quantization Settings Destructively (or use
the Apply Quantization Destructively key command, default assignment: Control-Q).
Note: When this is done, it is impossible to revert to the original recording, unless you
use Undo immediately after performing the operation (or use the Undo History command).
635 Chapter 21 Quantizing Audio and MIDI