The audio component, including DME, of a film composition. There is usually a requirement for sound to be synchronized to the video image. This has been achieved by a variety of means, including the recording of sound on optical tracks etched into the film emulsion alongside the frames, fixing magnetic tracks on the film surface, synchronizing the film with a separate tape machine by means of mechanical sprockets, and electronic sync using systems such as SMPTE. See also Dolby Stereo, LC Concept, SR.D, pilot tone, layback recorder, source track.« Back to Glossary Index
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