DigiDesign Pro Tools Reference Manual page 281

You can select whether a track is sample-based
or tick-based when it is created, or change time-
bases later.
Switching Timebases
All Pro Tools tracks can be switched between be-
ing sample-based or tick-based.
Track height affects how various track controls
appear in the Edit window. The Timebase selec-
tor is only visible in Small or larger track
heights.
To switch the timebase of a track, do one of the
following:
If the track's height is set to Small or larger,
■
click the Timebase selector for the track and se-
lect the desired timebase. The Timebase selector
icon changes to reflect your choice.
.
Timebase selector
(ticks)
Track Timebase selector on a track with a Medium
height
Timebase selector
(ticks)
Track Timebase selector on a track with a Small height
– or –
Timebase selector
(samples)
Timebase selector
(samples)
If the track's height is set to Mini, click the
■
small arrow next to the Track View selector to
get the Track Height pop-up menu, and select
the desired timebase from the Track Timebase
sub-menu.
Track Height pop-up menu
Alternate Playlist Timebases
When you change a track's timebase, you can
choose to apply the timebase change to the ac-
tive Playlist on that track only, or to that track
and all the alternate playlists for that track.
To configure a timebase change to affect
timebases of all playlists in a track:
Click the Timebase selector and enable the
■
"Selection Changes Alternate Playlists" option.
Timebase selector and pop-up menu
Groups
When you change the timebase for an audio
track that is part of an active group, all the tracks
in the group will change to the same timebase.
Chapter 15: Editing Basics 269