Sound Recording and Reproduction (Sound on Film)
Sound Recording and Reproduction (Sound on Film) is a short film from 1943 released on 16mm. It is held in the Prelinger Archives collection.
HOW MICROPHONE TRANSFORMS KINETIC ENERGY OF AIR WAVES INTO ELECTRICAL ENERGY; HOW FLUCTUATIONS IN ELECTRIC CURRENT OPERATE PHOTOGRAPHIC LIGHT VALVE WHICH REGISTERS THEIR FLUCTUATIONS THRU VARYING LIGHT BEAM UPON SENSITIZED PHOTOGRAPHIC FILM; REVERSE. VARIABLE AREA & VARIABLE DENSITY SOUND TRACKS EXPLAINED & DEMONSTRATED. SOUND FILM PROJECTORS. Best scenes: 1) The narrator actually speaking the soundtrack to the film in real time, and 2) the end, where you can "see" a soundtrack.
06:42:11:00 - 06:43:05:00 VS man transferring motion-picture film from one reel to another; CU individual frames on film picturing woman, arrow pointing to her; arrow points to optical soundtrack on film; picture negative and sound negative side-by-side; diagram showing how negatives combine to create positive
06:43:05:00 - 06:47:23:00 VS man sitting at desk, talking into microphone (this is James A. Brill, the narrator for all of the ERPI Classroom Films, speaking); animated sound waves emitting from man's mouth to microphone; CU sound waves going into microphone; VS diagraming how sound moves from microphone to amplifier to recorder and onto sound track strip; VS diagramming various kinds of sound track strips and how light passes through; VS diagramming sound from amplifier to loudspeaker
06:47:24:00 - 06:50:39:00 Diagram of parts of light valve: ribbons, light slot, bridges, tensioning means; CU man looking through microscope; diagram of light valve ribbons (as seen through microscope); VS diagram of lens, apertures and ribbon slots, lens system and film; VS parts of light valve
06:50:39:00 - 06:51:03:00 MCU balding man with glasses, sitting behind desk talking toward microphone
06:51:03:00 - 06:52:26:00
Diagram what different types of soundtracks (variable density and varible area) look like as they run| Sound Recording and Reproduction (Sound on Film) | |
|---|---|
| Produced by | Encyclopaedia Britannica Films |
Production company | Encyclopaedia Britannica Films |
| Distributed by | Encyclopaedia Britannica Films |
Release date | 1943 |
Running time | 10:15 |
| Language | English |
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