The English term Automatic Dialogue Recording (ADR), also know as Additional Dialogue Recording or Automatic Dialogue Replacement. It refers to the process of recording missing/broken or additional dialogue after the original production (after the production sound has been recorded). It is typically recorded in a studio or post-production facility and not on production site. The procedure is part of the post-production, that starts when the film project enters the editing phase. Reasons for ADR can be:
- The dialogue recorded during filming is inadequate in terms of content or technology.
- Dialogue fragments should be added later.
- The film has no original sound (for example, in the case of animated films).
- The film is to be translated into another language. In this case, speech synchronization is also often used.