Using the Sync tab

Setting sync preferences

Generate MIDI Timecode settings

 

Output device

Choose a MIDI device from the drop-down list. MIDI timecode is sent to this

 

 

device. The MTC slave should also be set to this device. This device will not be

 

 

available for MIDI playback.

 

 

 

 

Frame rate

Choose a frame rate from the drop-down list. This frame rate is used to generate

 

 

the MIDI timecode. The MTC slave must be set to the same frame rate.

 

 

 

 

Generate MIDI Clock settings

 

 

Output device

Choose a MIDI device from the drop-down list. MIDI clock is sent to this device.

 

 

The MIDI clock slave should also be set to this device.

 

 

 

Trigger from MIDI Timecode settings

 

Input device

Choose a MIDI device from the drop-down list. MIDI timecode is received from this

 

 

device. The MTC master should also be set to this device.

 

 

 

 

Frame rate

Choose a frame rate from the drop-down list. This value specifies the frame rate at

 

 

which the MTC master sends timecode to ACID.

 

 

 

 

Advanced

Click to open the Advanced Sync Preferences dialog.

 

 

 

 

Default All

Restores all sync preferences to the default settings.

 

 

 

Setting advanced sync preferences

 

 

 

 

 

MTC Input

 

 

Free-wheel for timecode loss

Select this check box if you want to continue to play if timecode is lost.

 

 

Enabling this option can compensate for infrequent losses in timecode. If you

 

 

frequently lose timecode, you should perform troubleshooting to determine the

 

 

cause of the problem.

 

 

 

 

Free-wheel slack time

Use the up and down arrows or enter a value in the box to specify the amount of

 

 

time that timecode can be lost before the free-wheel playback time starts. A

 

 

longer time is more tolerant of breaks in the incoming timecode.

 

 

 

 

Free-wheel playback time

Use the up and down arrows or enter a value in the box to specify the amount of

 

 

time that playback continues after the free-wheel slack time has been exceeded.

 

 

 

 

Synchronization delay time

Use the up and down arrows or enter a value in the box to specify the amount of

 

 

time it takes for the software to synchronize itself to incoming timecode.

 

 

On slower computers, this time should be set to approximately two seconds. On

 

 

faster computers, it may be set lower.

 

 

Setting this value too low can sometimes result in audible pitch shifting at the

 

 

start of playback.

 

 

 

 

Offset adjust

If ACID is consistently behind or ahead of your MTC generator, enter a value in the

 

 

box to adjust a synchronization offset with quarter-frame accuracy.

 

 

If the software is behind, set this value to a negative number. A setting of - 4 is a

 

 

common offset.

 

 

If the software is ahead, set this value to a positive number. A setting of +4 is a

 

 

common offset, although it is rare that the application will sync ahead.

 

 

 

 

MTC Output

 

 

Full-frame message generation

Select a radio button to determine when full-frame timecode messages are sent

 

 

while Generate MIDI Timecode is active. Full-frame messages are used by some

external synchronizable audio devices to seek to a proper location prior to actually starting synchronization. Tape-based recorders especially benefit from seeking to full-frame messages because of the time it takes to move the transport to the proper location. However, full-frame messages are ignored by some devices, and may actually cause unexpected behavior in other devices.

Refer to your hardware documentation to find out if your hardware supports full- frame messages.

MIDI Clock Output

262 APPENDIX A