Also known as mixing or re-recording, dubbing is a process used in the film and television industries. Dubbing combines various recordings – the original soundtrack captured during filming, plus sound effects, music, voice-over and additionally recorded dialogue – to produce a finished soundtrack. Dubbing editors rely on Foley artists to provide sound effects. During additional dialogue recording (ADR), actors will re-record their dialogue in a studio. This form of dubbing is essential since it is rarely possible to capture dialogue of an adequate quality during principal photography – especially when filming outdoors.