Digital Theater System, USA 6 digital soundtracks for 35 mm film Digital audio data is recorded on two CD-ROM discs. Timecode is printed on the motion picture print along with conventional stereo optical sound track. The reverse is also true - the system can be used in a 4, 5.1, or 6 track auditorium and the system will convert the data correctly without user intervention.
Digital information is placed on film.
The digital tracks are placed outside the sprocket holes on both sides of the film. The optical tracks are retained.