251 Automating changes in audio tracks In the previous section, you set volume and panning values for entire tracks while
listening to the audio. Adobe Premiere Pro also lets you apply volume and panning
values that change over time, and you can apply them as you play your sequence.
To do so, use automation modes, accessed via pop-up menus at the top of each
track in the Audio Mixer. Using one of the automation modes creates a series of
track (as opposed to clip) keyframes for volume and panning, saving you from
adding them one at a time.
Briefly, here’s what each setting means (you can read more about this in Adobe
Premiere Pro Help):
t Off : This setting ignores any changes you apply and thus lets you test some
adjustments without recording them.
t Read : Adjusting a track option (such as volume) affects the entire track
uniformly. This is the default setting you used when setting the mix volume
in step 6 of the previous exercise.
t Latch : This works like Write (see below) but won’t apply changes until you
move the volume slider or panning knob. The initial property settings are from
the previous adjustment.
t Touch : This works like Latch except that when you stop adjusting a property,
its option settings return to their previous states before the current automated
changes were recorded.
t Write : This setting records adjustments you make as you listen to a sequence.
Outputting tracks to submixes You place your audio clips into audio tracks on the Timeline. You can apply effects
and set volume and panning on a clip-by-clip basis. Or you can use the Audio Mixer
to apply volume, panning, and effects to entire tracks. In either case, by default
Adobe Premiere Pro sends audio from those clips and tracks to the master track.
But sometimes you might want to route tracks to submix tracks before sending
them on to the master track.
The purpose of submix tracks is to save you steps and ensure some consistency in
how you apply effects, volume, and panning. In the case of the Sonoma recording,
you can apply Reverb with one set of parameters to the two choir tracks, and you
can apply Reverb with different parameters to the three instruments. The submix
can then send the processed signal to the master track, or it can route the signal to
another submix.