November 2007
Intermediate to advanced
736 pages
46h 32m
English
Content preview from Consumer Electronics
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CHAPTER 27
THEATRE SOUND SYSTEM
Theatre sound systems differ considerably from audio systems. The chief distinction is in the method of sound recording and reproduction. For theatre systems, the audio signal is recorded on film and is reproduced by means of a light beam and photoelectric cell. The sound may be recorded on the same film as the picture or it may be recorded on a separate film. In most cases the recording consists of an optical band 0.1 to 0.2 inch in width, running on the right-hand side of the picture and next to the sprocket holes in the film. When wide screens were introduced in 1952, the traditional set of speakers behind the screen were supplemented by a speaker system placed at various locations in the audience area so ...
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