Audio editing in Premiere Pro involves several layers of control, from individual clips to entire tracks. Clip gain adjusts the volume of a specific audio clip in the Source or Program monitor, allowing editors to balance clips recorded at different levels. Track volume, on the other hand, is applied to the whole audio track via the Audio Track Mixer and affects every clip on that track. The Audio Gain command adjusts a clip's volume by a fixed decibel amount independent of the track fader, while Normalize Audio Peak raises or lowers a clip so its loudest peak reaches a specified target level, typically -3 dB.
Keyframing audio allows editors to automate changes over time, such as ducking music under dialogue or fading sound effects. Volume keyframes are added directly on the audio track's rubber band in the timeline. The Essential Sound panel simplifies audio work by letting editors tag clips as Dialogue, Music, SFX, or Ambience, then apply built-in processing presets and Auto Ducking, which automatically lowers music when dialogue is detected. The Audio Track Mixer offers more traditional channel-strip controls for volume, panning, muting, soloing, and sends. Automation modes such as Touch, Latch, and Write record fader movements as keyframes in real time.
Understanding audio formats and routing is also essential. Mono audio uses one channel, stereo uses two (left and right), and 5.1 surround uses six channels: center, left, right, left surround, right surround, and a low-frequency effects subwoofer. Audio panning places a sound source in the left-right stereo field, with values from -100 (full left) to +100 (full right). The Audio Channel Mixer effect lets editors remap, combine, or separate channels within a clip, useful for extracting dialogue from a stereo file or converting between formats. Constant Power and Constant Gain transitions differ in how they handle audio during a crossfade: Constant Power maintains perceived loudness, while Constant Gain causes a noticeable dip at the midpoint.