A Sound Editor creates the soundtrack by cutting and synchronizing to the picture, sound elements, such as wild tracks, dialogue tracks, library material and analog. The editor then presents these to the sound mixer for final sound balance.

A sound mixer oversees the audio recording as filming progresses, managing a crew of boom operators and other technicians. It’s up to him or her to select the best equipment for each scene – from what kind of mics to use and where to place them, to directing where the boom operator should position the boom mic.