Fading audio in and out in Timeline view
You can make an audio clip or native audio track fade in and out at any time during the audio.
To fade the audio in and out in Timeline view:
1 Select the audio clip for which you want to apply fading.
2 On the Timeline toolbar, click Adjust Volume.
3 To gradually increase the volume at the beginning of the audio clip, select Fade In.
4 To gradually decrease the volume at the end of the audio clip, select Fade Out.
See also: