The Selenophon Sound Recording System

This brief description of the Selenophon process of recording was offered as a contribution to the Progress Committee Report of May, 1931. The process is employed to record sound photographically on film by the variable width method, employing a string oscillograph for varying the light intensity; a tightly strung fiber moving in sympathy with sound vibrations, and acting as a variable shutter in the path of the beam of light. The reproducer is briefly referred to, in which a selenium cell of the condenser type is used in conjunction with a five-stage amplifier.

Print ISSN

0097-5834

Published

1932-05

Content type

Original Research

DOI

10.5594/J05528