Apple Logic Pro X - Manual (Page 839)

Chapter 24 Video and synchronization 839
Position a bar to a specific time
1 Open the Tempo List. See Tempo List overview on page 586.
2 Create a tempo event at the target bar position.
3 Set a time position for this tempo event in the (SMPTE) Position column.
The preceding tempo event is automatically adjusted, to generate the correct bar and time
position for the inserted tempo event.
4 If you want to keep the same tempo for the following passage, delete the tempo event
you inserted.
Logic Pro X synchronization
Synchronization overview
Logic Pro X supports most synchronization protocols, allowing you to synchronize it with
external hardware and software. Logic Pro X can act as the master synchronization device or as a
synchronization slave to another device.
The Lock (and Unlock) SMPTE Position function is available only when Show Advanced
Tools is selected in the Advanced preferences pane.
In all synchronization situations, regardless of the simplicity or complexity of your studio
configuration, the following rules apply:
•
There can be only one synchronization master.
•
The synchronization master sends timecode information (synchronization signals) to one or
more synchronization slaves.
Important: In most cases, you will need to manually set each synchronization-capable device—
including Logic Pro X itself—to act as master or slave. If you don’t do this, there will be multiple
master devices in your system, which will result in synchronization errors.
Supported synchronization protocols
•
MIDI Time Code (MTC): Translates a SMPTE timecode signal into a MIDI standard timecode
signal. See
MTC interpretation .
•
MIDI Clock: Short MIDI message for clock signals. Used to provide a timing pulse between
MIDI devices.
•
Logic Pro Xcan send MIDI Clock signals to synchronize external devices.
•
Logic Pro Xcan not receive MIDI Clock synchronization signals.
•
SMPTE timecode: An audio signal that is translated into MTC by some MIDI interfaces, such as
the Unitor8.
•
Word Clock: A signal that is carried by all digital audio interface formats: ADAT, FireWire Audio,
S/P-DIF, AES-EBU, T-DIF, and others. Used to maintain the timing integrity of sample words
in audio signals that are transmitted digitally between Logic Pro X and external hardware or
software. See
Audio Synchronization settings .
•
ReWire: Logic Pro X can act as a ReWire host. It acts as the master synchronization source for
ReWire-enabled applications such as Reason and Ableton Live. See
ReWire objects .
Tip: Logic Pro X also supports manual or “human” sync, when slaved. This is not a synchronization
protocol per se, but enables Logic Pro X to follow tempo changes in real time. As an example, it
could chase a live drummer. See
Use the Tempo Interpreter on page 596.