Apple Logic Pro 9 - Manual (Page 628)

Understanding Region- and Event-based Quantization
Region-based quantization is a process that affects all transient markers in an audio region
or all note events in a MIDI region. You have the choice of quantizing audio or MIDI
regions, or a mixed selection of audio and MIDI regions.
Note: Region-based quantization does not work on other MIDI data event types, such as
MIDI controllers.
Event-based quantization is the quantization of individual MIDI events (not only note
events) within a MIDI region. This is performed in the MIDI editors.
Important: Event-based quantization destructively alters the position of all MIDI event
types, except note events.
You can also create groove templates, which are quantization grids based on the rhythms
of other audio or MIDI regions.
Understanding the Quantize Grid Options
You can quantize selected audio or MIDI regions, including a selection of both, by changing
the value of the Quantize parameter in the Region Parameter box of the Inspector. This
parameter determines the division of the quantization grid.
Important: The region Quantize parameter is nondestructive. It adjusts the playback
positions of notes in the region on-the-fly when Logic Pro is in Playback or Record mode.
It does not actually move the notes permanently.
The settings in the Quantize pop-up menu in the Region Parameter box of the Inspector
can be roughly grouped into the following categories:
• Mixed quantization: The 8 & 12 setting corresponds to eighths and eighth triplets, 16 &
12 to sixteenths and eighth triplets, and 16 & 24 to sixteenths and sixteenth triplets.
Mixed quantization always applies to both note values, and requires greater playing
precision when recording.
• Odd quantization: The 9-Tuplet setting denotes novetuplets (1 bar = 9 beats), 7- Tuplet
is septuplets (1 bar = 7 beats), 5-Tuplet/4 is quarter quintuplets (1 bar = 5 beats), and
5-Tuplet/8 is eighth quintuplets (1 bar = 10 beats).
628 Chapter 21 Quantizing Audio and MIDI