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Table Of Contents
Logic Express can be synchronized with external hardware and software via a number of
different synchronization protocols. In this chapter, you’ll take a detailed look at these
protocols.
This chapter covers the following:
Understanding the Synchronization Protocols (p. 1143)
The Synchronization Master and Slave Relationship (p. 1144)
Using External Synchronization (p. 1144)
Displaying and Using SMPTE Positions (p. 1146)
MIDI Machine Control (p. 1148)
Synchronization Problems and Solutions (p. 1150)
Understanding the Synchronization Protocols
Logic Express supports the following synchronization protocols:
MIDI Time Code (MTC): Translation of a SMPTE time code signal into a MIDI standard
time code signal.
MIDI Clock: Short MIDI message for clock signals. It is used to provide a timing pulse
between MIDI devices. Logic Express can send MIDI Clock signals to synchronize external
devices. It cannot receive MIDI Clock synchronization signals.
SMPTE time code: An audio signal that is translated into MTC by some MIDI interfaces,
such as the Unitor8.
Word Clock: This is a signal that is carried by all digital audio interface formats (ADAT,
FireWire Audio, S/P-DIF, AES-EBU, T-DIF). It is used to maintain the timing integrity of
sample words in audio signals that are transmitted digitally between Logic Express and
external hardware or software.
ReWire: Logic Express can act as a ReWire host. It acts as the master synchronization
source for ReWire-enabled applications such as Reason and Ableton Live. This chapter
does not cover the use of Logic Express as a ReWire host (see Working with ReWire
Applications).
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Synchronizing Logic Express
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