Specifications

Chapter 12: ReWire 69
Tempo and Meter Changes
Pro Tools transmits both Tempo and Meter data
to ReWire client applications, allowing ReWire-
compatible sequencers to follow any tempo and
meter changes in a Pro Tools session.
With the Pro Tools Conductor button selected,
Pro Tools always acts as the Tempo master, us-
ing the tempo map defined in its Tempo Ruler.
With the Pro Tools Conductor button dese-
lected, the ReWire client acts as the Tempo mas-
ter. In both cases, playback can be started or
stopped in either application.
Looping Playback
Because Pro Tools does not offer separate loop
markers as found in other third party applica-
tions such as Reason, if you want to loop play-
back, do one of the following:
To loop playback in Pro Tools:
1 In the Pro Tools Timeline, select the time
range that you want to loop.
2 Begin playback by pressing the Spacebar or
clicking the Play button in the Transport.
To loop playback within a ReWire client sequencer
 With playback stopped, specify the loop
within the ReWire client application and begin
playback.
Pro Tools supports tempo values from
30–300 bpm. When slaved to a ReWire cli-
ent application, Pro Tools playback will be
restricted to this range even if the client ap-
plication’s tempo is outside this range. Ad-
ditionally, some ReWire client applications
(such as Reason) may misinterpret
Pro Tools meter changes, resulting in mis-
matched locate points and other unexpected
behavior. To prevent this, avoid using meter
changes in Pro Tools when using Reason as
a ReWire client.
If you create a playback loop by making a
selection in the Pro Tools Timeline, once
playback is started, any changes made to
loop or playback markers within the ReWire
client application will deselect the Pro Tools
Timeline selection and remove the loop.