Magnetic soundtrack


Magnetic sound film with a film base having perforations along one or both edges bearing a ferro-magnetic coating, either completely across the film or in stripes, the coating capable of accepting and reproducing sound records. Unperforated materials are usually referred to as magnetic soundtrack on 70mm film (Dolby®).

Full-coat-between-perforations is film that has the magnetic coating compound across the film from perforation to perforation. Full-coat magnetic film has the magnetic-coating compound applied across the film from edge to edge.