Push-Pull Recording with the Light-Valve

Push-pull recording on film is accomplished by means of a double light-valve having four ribbons. Distortions introduced by the recording medium that are represented by second-order harmonics balance out in reproducing, as do also the frequencies introduced by the action of the noise-reduction system. As a result, push-pull recording not only eliminates certain defects of conventional recording, but permits the application of new technics that allow further extension of the volume range and improvement in the naturalness in the final product.

Print ISSN

0097-5834

Published

1938-07

Content type

Original Research

DOI

10.5594/J14653