Method and system of controlling sound and effects devices by a film strip
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United States of America Patent
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-
Mar 17, 1981
Issued Date -
N/A
app pub date -
Dec 31, 1979
filing date -
Sep 27, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and system of blending the effective audio sensation in a theater having a plurality of audio speakers driven by a single program signal recorded on a motion picture film strip as the film strip is being projected in the theater, which method and system includes the driving of each of the speakers in the theater with a common program signal through an amplifier having a gain controlled by an analog electrical signal whereby the level of the analog signal determines the volume of the program signal at each of the speakers and creating a digital gain control signal for each of the speakers in response to a control signal recorded periodically on the film strip at locations on the film strip determined by the desired volume of a given speaker at a given time which digital gain control signal is converted to an analog signal and is used for controlling the driving amplifiers of each of the speakers in the theater in which the film is being projected.
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