Components and mechanical considerations for magnetic sound on 35mm film

The art of sound recording in the motion picture field had reached a high professional status before magnetic recording began to receive consideration bythe radio and television industries. This articIe reviews this status and discusses the relative merits of 35-mm sprocket-hole film and inch tape with respect to the requirements of the motion picture industry. The article traces the applications of the magnetic recording medium to single-track, multi-track and stereophonic recording, including composite magnetic sound and picture film. The discussion includes a description of the associated apparatus and i t s conformity to the established practices of the industry.