SOUND RECORDING AND REPRODUCTION
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Series: Physical Science Series
Duration: 10 min
Year Published: 1943
Creator: Encyclopaedia Britannica Films Inc
Format: 16mm
Sound: Sound
Description: This film describes how sound is converted into light rays to produce sound motion pictures and how the projector is able to change the light rays back into sound waves. We learn from the film how the two great systems operate, sound recording by variable area and sound recording by variable density. The film ends with visualizations of sound as it appears by both systems.
Complete Record: Series: Physical science series Dewey number: 534 Audience level: sh-c-trade-adult Guide 15c Format/cost: 16-sd-$50 Distributors / rental: Not shown in source
Metadata Source:Educational Film Guide 1946
No holdings listed.
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Record added: 2026-07-02 14:42:44