Telecine Reproduction of Motion-Picture Audio

Motion-picture film, being a plastic composite manufactured and used to minute dimensional tolerances, presents a number of geometric challenges which must be met to ensure the most favorable audio reproduction. The audio record and the scanning optical slit or magnetic gap must be aligned in X, Y, and Z coordinates by system design and film guidance that recognize the reversible and irreversible dimensional changes occurring throughout a film's life. The film transport must servo film velocity against the perforations as a clock track, without permitting the perforations to modulate the audio reproduction. How the inherent physical properties of motion-picture film, can be compensated in telecine audio design is examined. The reference data, standards, and test materials are cited.

Print ISSN

0036-1682

Published

1979-12

Content type

Original Research

DOI

10.5594/J13168