Characteristics of the Photophone Light-Modulating System

L. T. Sachtleben

Some of the requirements of the ideal light-modulating system for recording sound upon film are discussed, together with features of design and certain operating characteristics which should be incorporated into and exhibited by such a system. The Photophone light-modulating system is outlined, its general adaptability to the production of a wide variety of sound-track types reviewed, and its practical conformity to the ideal requirements pointed out.

Print ISSN
Published
1935-08
Content type
Original Research
DOI
10.5594/J05391