Sound Recording and Reproduction

Shows how the microphone transforms the kinetic energy of air waves into electrical energy; how fluctuations in electric current operate a photographic light valve which registers their fluctuations through a varying light beam upon a sensitized photographic film; and finally how the process is reversed in the reproducing process through the sound film projector. Variable area and variable density sound tracks are explained and demonstrated.

Related films

Sources

  1. 16mm Filmography (legacy record) — title, year, creator, length, format, color, description, catalog record