10.6

378Logic Pro User Guide
Note: If you’re editing MIDI regions that appear as notation on a polyphonic staff style,
you should use use the Apply All except Channel function, as the event channel is used to
assign notes to individual polyphonic voices in the Score Editor.
Logic Pro MIDI quantization types
For MIDI regions, there are two types of quantization: Classic Quantize and Smart
Quantize.
• Classic Quantize quantizes MIDI notes to the nearest beat, using the current Quantize
setting and any advanced Quantize parameters.
• Smart Quantize works similarly to Flex Time for audio regions. MIDI events near
grid positions (defined by the Q-Range setting) are analyzed. Based on a combined
weighting of proximity to the target grid position and velocity, a reference point (”center
of gravity”) is set for each group, and moved to the target grid positions. All (nearby)
MIDI events move proportionally to the reference point. How far each event moves is
determined by the Q-Strength setting. Unlike Classic Quantize, all MIDI events keep
their original order, similar to an audio region edited using Flex Time. This includes not
only notes but all MIDI data types (such as Pitch Bend and Control Change events).
In many cases, Smart Quantize can produce more natural sounding results than Classic
quantization. For example, in a MIDI piano performance, the notes of quickly arpeggiated
chords keep their relative positions, as do sustain pedal (on/off) events. Another useful
situation is in MIDI drum performances that need some quantizing, but where classic
quantization would distort rolls, flams, and other notes not played strictly on the beat (and
also possibly the relative position of Hi-Hat on/off events). In both cases, Smart Quantize
keeps the relative position of note on, note off, and CC events.
Choose the MIDI quantization type
• In the Logic Pro Region inspector, click the Quantize label, then choose a quantization
type from the pop-up menu.
Logic Pro Quantize parameter values
You can quantize selected audio or MIDI regions (including a mixed region selection) using
the Quantize parameter in the Region inspector. This parameter determines the division of
the quantization grid.
Important: The Quantize parameter is non-destructive. It adjusts the playback positions of
notes in MIDI regions when Logic Pro is in playback or record mode. The original positions
are kept in the regions, so you can go back to the original timing.