Work with submixes
A submix is a track that combines
audio signals routed to it from specific audio tracks or track sends
in the same sequence. A submix is an intermediate step between audio
tracks and the master track. Submixes are useful if you want to work
with a number of audio tracks in the same way. For example, you
can use a submix to apply identical audio and effect settings to
three tracks of a five‑track sequence. Submixes can help make the
best use of your computer’s processing power by allowing you to
apply one instance of an effect instead of multiple instances.
Like audio tracks that contain clips, submixes can be mono, stereo,
or 5.1 surround. Submixes appear as fully functional tracks in both
the Audio Mixer and a Timeline panel—you can edit submix track properties
just as you edit a track containing audio clips. However, submixes
are different from audio tracks in the following ways:
Submix tracks can’t contain clips, so you can’t record
to them. Therefore, they don’t contain any recording or device input
options or clip editing properties.
In the Audio Mixer, submixes have a darker background than
other tracks.
In a Timeline panel, submixes don’t have a Toggle Track Output
icon 
or
a Display Style icon 
.
Create a submix in a Timeline panel
- Choose Sequence > Add Tracks.
- Specify options in the Audio Submix Tracks section, and
then click OK.
Simultaneously create a submix and assign a send
- If necessary, display the effects/sends
panel in the Audio Mixer by clicking the triangle to the left of
an automation option’s pop‑up menu.
- Choose Create Mono Submix, Create Stereo Submix, or Create
5.1 Submix from any of the five sends list pop‑up menus in the Audio
Mixer.
Choosing submix type in Audio Mixer
Route a track’s output to a submix
In the Audio Mixer, select the submix
name from the track output menu at the bottom of the track.
PDF (adobe.com)
