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A vintage Fox movietone motion picture camera. The Case Research Lab's sound system substantially impacted industry standards. For instance, it positioned the optical sound 20 frames ahead of the accompanying image. [3] [4] [5] The SMPTE standard for 35 mm sound film is +21 frames for optical, but a 46-foot theatre reduces this to +20 frames.
For synchronised sound, the sound was specified as 56 frames in advance of the picture. On the Cinephonic Eight cameras, the picture/sound separation was 52 frames. Fifty six frames was the same physical distance as magnetic sound was specified for the 16 mm film format (or 28 frames in that format).
The latest overall length of both styles is the same: in 35mm, 16 feet and 4 frames or 260 frames. The countdown section begins with a single frame bearing the words "Picture Start." The sync beep (or 2-pop) occurs in synchronization with the last numbered frame ("3" on the Academy leader, "2" on the SMPTE Television leader). The length of the ...
Sound-on-film is a class of sound film processes where the sound accompanying a picture is recorded on photographic film, usually, but not always, the same strip of film carrying the picture. Sound-on-film processes can either record an analog sound track or digital sound track, and may record the signal either optically or magnetically .
For half a century, cinema sound systems were licensed to either RCA or Western Electric, and motion picture producers elected to license one or the other, or even both. This continued until 1976, by which time optical sound recording had been converted to the Western Electric (dubbed "Westrex") stereo variable-area system.
Super 8 and 8 mm film formats – magnetic sound stripes are shown in gray. Super 8 mm film is a motion-picture film format released in 1965 [1] [2] [3] by Eastman Kodak as an improvement over the older "Double" or "Regular" 8 mm home movie format.
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