Apple Soundtrack Pro 2 - Manual (Page 127)

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Working in the Timeline
The Timeline is where you arrange audio clips to build your
soundtrack. You can also adjust volume and panning, add
effects, and edit envelopes to control automation.
Note: This chapter covers the mechanics of working with clips, tracks, busses, and
submixes in the Timeline. For strategies on setting up a sound-for-picture
post-production project, see “
Example: Mixing a Project with Dialogue, Music,
and Effects Submixes ” on page 266. For information on signal routing in
Soundtrack Pro, see “ Basic Signal Routing in Soundtrack Pro ” on page 263.
Working in the Timeline
The Timeline displays a visual representation of a project, showing the point in time
when audio clips start playing and their duration. You control when and how long clips
play by moving and resizing them in the Timeline.
The Timeline is arranged in three sets of horizontal rows: tracks, busses, and submixes.
You add audio clips to tracks, create submixes using busses, and send audio to physical
output devices using submixes. For information about working with tracks, busses, and
submixes, see “
Tracks, Busses, Submixes, and the Master Bus ” on page 124.
The Timeline also displays vertical gridlines that make it easy to position clips precisely
in time. The gridlines correspond to the divisions of time in the Time ruler. The units of
time the gridlines display change depending on the Ruler Units setting in the Project
tab and the current zoom level.