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A sequence can contain any combination of the following
audio tracks:
- Mono (monophonic)
- Contains one audio channel.
- Stereo
- Contains two audio channels (left and right).
- 5.1
- Contains three front audio channels (left, center, and right),
two rear or surround audio channels (left and right), and a low-frequency
effects (LFE) audio channel routed to a subwoofer speaker.
You
can add or delete tracks at any time. Once a track is created, you
can’t change the number of channels it uses. A sequence always contains
a master track that controls the combined output for all tracks
in the sequence. The master track’s format, the number of audio
tracks in a sequence, and the number of channels in the audio tracks
is specified in the Tracks panel of the New Sequence dialog box.
A
sequence can contain two types of audio tracks. Regular audio
tracks contain actual audio. Submix tracks output
the combined signals of tracks or sends routed to it. Submix tracks
are useful for managing mixes and effects.
Although each
sequence is created with the designated number of audio tracks in
a Timeline panel, Premiere Pro automatically creates new audio tracks
when you drop an audio clip below the last audio track in a Timeline
panel. This feature is useful if the number of audio clips that
you’re stacking exceeds the number of available tracks in a sequence,
or if the number of channels in an audio clip doesn’t match the
number of channels in the default audio tracks. You can also add
tracks by right-clicking a track header and choosing Add Tracks,
or by choosing Sequence > Add Tracks.
 Premiere Pro creates new audio track to match channel format
of clip dragged to Timeline panel.
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