Reference Guide

821
MIDI Synchronization
Synchronizing Your Gear
synchronizes MIDI playback to match the audio. For more information, see “System Configuration”
on page 843. You cannot use the tempo ratio controls when using the audio clock, because the
audio playback speed is determined by the audio clock.
When either of these clock sources is used, you can also configure SONAR to drive other MIDI
devices using MIDI Synchronization. For more information, see “MIDI Synchronization” on page 821.
If you need to send MIDI Time Code (MTC), SONAR will send this data regardless of the clock
setting.
To Use the Internal Clock Source
1. Click on the Sync toolbar.
OR
1. Choose Options > Project, and click the Clock tab.
2. Check the Internal box.
3. Click OK.
To Use the Audio Clock Source
1. Click on the Sync toolbar.
OR
Choose Options > Project, and click the Clock tab.
2. Check the Audio box.
3. Click OK.
MIDI Synchronization
MIDI Synchronization, or MIDI Sync, is usually used to synchronize SONAR with drum machines,
stand-alone MIDI hardware sequencers, and sequencers built into MIDI keyboards. SONAR can
slave to MIDI Sync, and can send MIDI Sync on multiple output ports.
When MIDI devices are synched, the master device sends messages to all other devices to start and
stop playback and to keep all the devices in sync. To change the tempo of a project, you adjust the
tempo on the master device. The playback tempo on all slave devices is then set automatically.
The following MIDI messages are sent by the master device to support MIDI Sync:
Message How it is used
Start This message tells slave devices to start playing from the beginning of the
currently loaded sequence.
Stop This message tells slave devices to stop playback.
Table 169.