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Author
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Topic: Cinemascope in mono.
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Mitchell Dvoskin
Phenomenal Film Handler
Posts: 1869
From: West Milford, NJ, USA
Registered: Jan 2001
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posted 12-22-2014 03:57 PM
If memory of things that I have read serve me correctly, and I don't guarantee that this is indeed correct, to install CinemaScope when it was introduced, part of the licensing required mag stereo. There was no optical track on those early prints. Theatre owners fought the stereo requirement tooth and nail. At some point, Walter Reade Theatres started installing CinemaScope with just the mag stereo preamps, merging the front channels into one amp so they could use their existing sound equipment. Shortly thereafter, Fox relented and started releasing mag/optical tracks. Originally, CinemaScope was 2.55:1. As a result of mag/optical, the picture area was reduced to make room for the optical track, so the new aspect ratio was 2.35:1.
All composite (picture and sound on one print) optical tracks were mono prior to the introduction of Dolby Stereo.
Perspecta Stereo utilized a mono track with 3 subsonic control tones that were used to control the volume of the front 3 speakers independently, allowing sound to pan as desired, simulating discreet stereo. Perspecta was intended as a cheaper alternative to mag stereo as dual inventory prints were not required, the prints were really just mono with the control tones filtered out below the academy sound curve.
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