When editing audio in Adobe Premiere Pro, switching your sequence’s units from frames to audio units allows you to make more precise audio edits on the timeline to remove vocal clicks, “ums” and other speech imperfections. Previously, I used to jump into an audio editing application to make these edits and I really appreciate the ability to do this without leaving Premiere Pro.
To switch from frames to audio units, click on the flyout menu in the upper-right corner of your sequence window and select “audio units”.
The one downside I’ve found with this, at least within Premiere Pro CS5.5 is when performing a ripple delete, to rejoin the two segments of the audio track, PP often leaves a slight gap in between the two clips. I haven’t yet been able to figure out why this occurs or how to automatically eliminate it, but a quick manual adjustment of the two tracks, with Snap enabled, solves the problem.
Update: I swapped email with the tip’s original author, Tim Kolb and he shed some light on the situation. The gap appears because the edit is a shorter duration than one frame of video. This makes sense because should the gap close, over time, these small gaps would cause the audio and video tracks to drift out of sync. So, these gaps are intentional. Feel free to close them if you’re working with still images (as I am for this project), but keep them for video.