Specifications

Chapter 19: Playing Back Track Material 429

Recording in Dynamic Transport

Mode

Recording in Dynamic Transport mode lets you

start playback independently of the Timeline se-

lection. Use the Play Start marker as a manual pre-

roll before the Timeline selection. Recording

punches in and out based on the Timeline

selection.

MIDI Beat Clock

Pro Tools can transmit MIDI Beat Clock to syn-

chronize external MIDI devices that receive MIDI

Beat Clock (such as drum machines, hardware se-

quencers, or arpeggiators) with the Pro Tools ses-

sion tempo for playback and recording. Some in-

strument plug-ins also support MIDI Beat Clock

for synchronizing to the Pro Tools tempo.

Transmitting Beat Clock

To transmit MIDI Beat Clock:

1 Choose Setup > MIDI > MIDI Beat Clock.

2 In the MIDI Beat Clock dialog, select the

Enable MIDI Beat Clock option.

3 Select the devices you want to receive MIDI

Beat Clock. If your MIDI interface does not

support transmitting MIDI Beat Clock to sepa-

rate ports, only the interface appears as a desti-

nation.

4 Enter the correct negative offset values (such as

“–200” samples) for each port that is enabled

for transmitting MIDI Beat Clock (see “Mea-

suring Beat Clock Latency” on page 430).

5 Click OK.

For information about synchronizing exter-

nal MIDI devices with Pro Tools for play-

back and recording using MIDI Timecode,

see “Generating Timecode” on page 1152.

MIDI Beat Clock dialog