What’s ADR or Dubbing?

This is the process where actors re-record their dialogue in a quiet, controlled environment.

Imagine the complexity of getting good sound if you’re shooting by the ocean during a storm. Boom mics will pick up the ocean crashing and the wind howling and the actor’s dialogue will be muffled. ADR is done in the post-production phase and allows for crisp clear dialogue tracks to be laid over the film.

For more information, please check out this article from Filmsound.org.