Premiere Pro must
downmix
the audio to the number of channels in the destination track.
Downmixing is often practical or necessary because a sequence’s audio may be played
back on audio gear supporting fewer audio channels than your original mix. For example,
you might create a DVD with 5.1 surround audio, but some of your customers may use
speaker systems or televisions that support only stereo (2 channels) or mono (1 channel).
However, downmixing can also occur in your project when you assign track output to a
track that has fewer channels. Adobe Premiere Pro provides a 5.1 Mixdown Type option
that lets you choose how to translate 5.1 surround audio into stereo or mono audio. You
can choose from various combinations of Front channels, Rear channels, and the LFE
(lowfrequency
effects, or subwoofer) channel.
To set audio preferences:
1
Choose Edit > Preferences.
2
Select the Audio pane, and choose a 5.1 Mixdown Type, and click OK.
Note: If you want to preserve the integrity of left/right channel assignments, you may
want to avoid using downmix options that include the LFE channel.
Automating audio changes in the Audio Mixer window
You can use automation to apply changes to an audio track’s settings as a sequence plays
back. You can automate the volume, pan, and mute settings of a track or its sends. For
track effects, you can automate all effect properties, including the bypass setting.
Automation modes are set in the pop-up menu at the top of each track. For example, with
automation set to Latch, Touch, or Write, drag a track’s volume fader or pan control during
playback. When you play back audio with a track’s automation pop-up menu set to Read,
Touch, or Latch, Adobe Premiere Pro plays back the track with the automated
adjustments.
As you make adjustments in the Audio Mixer window, Adobe Premiere Pro applies
your changes by creating track keyframes in the Timeline window. Conversely, track
keyframes you add or edit in the Timeline window automate values in the Audio Mixer
window (such as fader positions) as the audio plays back.
For each audio track, the selection in the automation options menu determines the track’s
automation state during the mixing process:
Off
Ignores the track’s stored settings during playback. Off allows real-time use of Audio
Mixer controls without interference from stored automation settings.
Using Help | Contents | Index Back 191
Adobe Premiere Pro Help Mixing Audio
Using Help | Contents | Index Back 191
Read
Reads the track’s automation settings and uses them to control the track during
playback. If a track has no settings, adjusting a track option (such as volume) affects the
entire track uniformly. If you adjust a property for a track set to Read automation, then
when you stop adjusting it, the value returns to where it was before the current
automated changes were recorded. The rate of return is determined by the Automatch
Time audio preference.
Write
Records adjustments you make to any automatable track settings that are not set
to Safe During Write, and creates corresponding track keyframes in the Timeline window.
Write mode writes automation as soon as playback starts, without waiting for a setting to
change. You can modify this behavior using the Switch to Touch After Write command in
the Audio Mixer window menu. When Switch to Touch After Write is on, all tracks set to
Write mode switch to Touch mode after playback stops or a playback loop cycle
completes.
Latch
Identical to Write, except that automation does not start until you begin to adjust a
