Other AudioSuite Plug-In Utilities : Normalize : Normalizing Multiple Clips
 
Normalizing Multiple Clips
When multiple clips are selected, the Normalize plug-in can search for peaks in two different modes:
Clip by Clip
Searches for the peak level on a clip-by-clip basis.
Entire Selection
Searches for the peak level of all clips in the selection.
To normalize an audio clip (or selection):
1. Select the audio you want to normalize.
2. Choose AudioSuite > Other > Normalize.
3. Adjust the Level slider.
4. Ensure that Use In Playlist is enabled.
5. Click Render.