某些 Creative Cloud 应用程序、服务和功能在中国不可用。
You can monitor audio levels for clips while capturing footage, in the Timeline panel and in the Program Monitor.
The Audio Meters panel displays the audio level for the captured footage. For more information, see Capturing and digitizing footage.
By default, Premiere Pro plays audio while scrubbing any clip or sequence containing audio in the Source Monitor, Program Monitor, or the Timeline panel. You can remove audio scrubbing by doing the following:
-
You can assign a keyboard shortcut to the Preferences > Audio command. For more information, see Find keyboard shortcuts.
Gain refers to the input level or volume in clips. You use the Audio Gain command to adjust the gain level for one or more selected clips. The Audio Gain command is independent of the output level settings in the Audio Track Mixer and Timeline panels. Its value is combined with the track level for the final mix. You can adjust the gain for an entire sequence with the Normalize Master Track command.
Volume refers to the output level or the volume in sequence clips or tracks. You can adjust the volume for a sequence clip in the Effect Controls or Timeline panels. In the Effect Controls panel, you use the same methods to adjust the volume that you use to set other effect options. It’s often simpler to adjust the Volume effect in the Timeline panel.
You can set gain or volume levels to make levels consistent among tracks, or to change the volume of a track. However, if the level of an audio clip was set too low when it was digitized, increasing the gain or volume amplifies noise. For best results, follow the standard practice of recording or digitizing source audio at the optimum level. This practice allows you to concentrate on adjusting track levels.
-
- Select the master clip in the Project panel. You can adjust the gain of a master clip so that all instances of the clip added to the Timeline panel have the same gain level.
- Select the clip in the Timeline panel. You can adjust the gain of just one instance of a master clip already in a sequence.
- In a sequence, Shift-click the clips to select them. To adjust the gain of more than one master clip or clip instance, select the clips in a Project panel or sequence. In a Project panel, Shift-click to select contiguous clips. To select non-contiguous clips, click Ctrl-click (Windows) or Command-click (Mac OS).
-
Set Gain to
The default value is 0.0 dB. This option allows the user to set gain to a specific value. This value is always updated to the current gain, even when the option is not selected, and the value appears dimmed.
Adjust Gain by
The default value is 0.0 dB. This option allows the user to adjust gain by + or - dB. Entering a value other than zero in this field automatically updates the Set Gain To dB value to reflect the actual gain value applied to the clip.
Normalize Max Peak to
The default value is 0.0 dB. Users can set this value to any value below 0.0 dB. It option adjusts the maximum peak amplitude in the selected clips to the user-specified value.
Normalize All Peaks to
The default value is 0.0 dB. Users can set this value to anything below 0.0 dB. This normalization option adjusts the peak amplitude in the selected clips to the user-specified value.
You can set the peak volume level for the master track of a sequence. Premiere Pro automatically adjusts the fader for the whole master track. The loudest sound in the track achieves the specified value. Premiere Pro scales any keyframes on the master track upward or downward, in proportion to the adjustment made in overall volume.
Note:
Adobe Premiere Pro does not allow a volume adjustment that would raise the peak higher than 0 dB.
You can add keyframes in the Timeline or the Effect Controls panel at the current time. Keyframes allow you to manipulate the volume of a clip.
You can adjust the volume level of a track or have the volume change over time using the rubber band in an audio track of a Timeline panel.
-
In the audio track header, click the Show Keyframes button
, and choose one of the following from the menu:
Keyframes on timeline panel- Clip Keyframes: You can animate audio effects for a clip, including Volume Level. These keyframes only apply to the selected clip.
- Track Keyframes: You can animate audio track effects like Volume and Mute. These keyframes apply to the entire track.
- Track Panner: You can change a track’s volume level. For more information, see Panning and balancing.
-
Use either the Selection tool or the Pen tool to move the Volume level rubber band up (increase volume) or down (decrease volume).
Note:
If you want the Volume effect to change over time, place the current-time indicator
at the location for each change, click the Add/Remove Keyframe button 
in the audio track header, and drag the keyframe up (louder) or down (quieter).
Note:
This procedure pastes all effects and attributes of the first clip selected, not just its volume settings.
-
- Enter a value for the Level. A negative value decreases the volume level and a positive value increases the volume level. A value of 0.0 represents the original clip’s volume level without adjustment.
- Click the triangle next to Level to expand the effect options. Use the slider to adjust the volume level.
A keyframe is automatically created at the position of the current-time indicator in the Effect Controls panel.
Using the Audio Track Mixer, you can set volume levels of all the audio tracks at the same time. For example, you can raise the volume of a narrator’s voice on one audio track while simultaneously decreasing the volume of the background music on another track. The Audio Track Mixer lets you make adjustments in real time while you listen to playback from desired tracks. For more information, see Audio Track Mixer overview.
By default, the volume adjustments made for each audio track on the Audio Track Mixer are saved in Show Keyframes visible on that track in the Timeline panel. Volume adjustments made for the whole mix are saved in Track Volume keyframes visible in the Master audio track in the Timeline panel.
Any adjustments you make during the editing process is remembered by the console. A timecode is required for synchronization in automation. The automation modes drop-down list is located above the fader bars in the Audio Track Mixer panel.
- Off – It ignores track settings and existing keyframes during playback. Changes are not recorded in this mode.
- Read – It is the default automation mode. Track keyframes are used to control playback. If a track does not have keyframes, changes affect the entire track.
- Write – It records adjustments and created keyframes during playback. Changes are made when playback begins. It does not wait for the settings to be changed.
- Touch – It is similar to Write. Automation does not occur until you adjust a property. When you stop adjusting the property, it returns to the previous state.
- Latch – It is also similar to Write. Automation does not start until you adjust a property. The property settings are available from the previous adjustment.
-
For each audio track in the Timeline panel, click the Show Keyframes button. Choose Clip Keyframes, Track Keyframes, or Track Panner from the pop-up menu. For more information, see Adjust track volume with keyframes.
Track Volume keyframes appear on each of the tracks for which you made volume adjustments, including the Master track.
Note:
You can use this procedure when automation isn’t applied to a track. If levels vary over time because track automation keyframes are already applied, you may be able to adjust the track level uniformly by sending it to a sub mix and setting the sub mix level.
Note:
Muting doesn’t affect pre-fader items such as effects and sends. Also, the state of the Mute Track button is subject to the automation settings in effect. If you want to silence the track output completely, click the track’s Speaker icon in the Timeline panel.