Quick Guide: How to Adjust Volume, Remove Noise, and Balance Audio in PowerDirector

Drag the white line along the clip's audio track. For a change partway through, hold Ctrl and click the line to add keyframes. Put one where the change starts and one where it ends, then drag the second.

Open the Audio Mixer from the top left of the timeline and click Normalize at the bottom of the track's strip.

It needs more than one clip on that track. With a single clip, PowerDirector shows a dialog explaining why it cannot normalize the audio.

Select the clip, click Edit above the timeline, and on the Audio tab click Enhance. Then select the tool for the problem and click its button. Use Speech Enhancement for traffic, AI Audio Denoise for hum and clicks, AI Wind Removal for wind, or AI DeReverb for echo.

For AI Audio Denoise, choose Dialogue or Music in the window that opens.

Set the sliders and compare the two with the Fixed and Original switch under Preview. Then click Apply.

Select the music clip, click Edit above the timeline, and on the Audio tab click Tools > Smart Fit for Duration.

Pick a length in the Adjust Duration window and click OK.

Or hold Shift and drag the clip edge.

Select the music clip, click Edit above the timeline, and on the Audio tab click Tools > Audio Ducking.

Set Sensitivity, Ducking level, and the two fade duration sliders, then click Apply.