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VARIOUS APPARATUS 63
and sound reproduction that will make the operation of such apparatus either successful or not.
The projection room, one can see, now contains apparatus that is both complicated and delicate; and because of changed circumstances, the projectionist has the important responsibility of handling the apparatus with intelligence. In the case of Movietone, for example, the photo-electric impulse is so delicate that it must be amplified almost one hundred thousand times before it reaches the loudspeakers. The man who is in control of apparatus such as this must be more than a mere mechanic — he should be a student of his new art. It calls for a study of the various auspices that guarantee perfect sound reproduction and embraces an inquiry into the laws of acoustics, as well as a knowledge of the parts of the apparatus itself. The projectionist should have an understanding of the principles of amplification and familiarize himself, not only with operation, but with the underlying laws upon which it depends. He should know what part each unit plays in producing a competent result. Much of the future development of sound equipment will come from the projection room, from those who realize the opportunities that lie before them. The projectionist can do the industry a great service in seeing to it that sound equipment is used to its best advantage, so that the public may judge the future of the medium in the proper light.
Again, sound has brought the necessity of a more accurate projection than in the past, because dialogue and enunciation must be sufficiently clear to be readily understood. Otherwise there will be complaint. It can readily be seen that the projectionist becomes one of the most important factors in the success of the sound motion picture theatre, and because of this his work must be carried on seriously and he must assume the responsibility that goes with the job.