Abstract
This presentation is a discussion of the complete variable-density recording system used by Metro-Goldwyn-Mayer Studios. — The channel is the result of several years of development and engineering to achieve a high standard of quality and signal-to-noise ratio. The complete system is described, beginning with the microphone, limiter amplifier, R.M.A. pre- and post-equalization, improved coils with special shielding, cylinder lens, noise reduction, improved type headset monitor, fine-grain film sensitometry, improved super-portable equipment, new recording machines and re-recording machines, and disk recording apparatus. Engineering specifications and analysis of the design considerations and the functional aspects of the apparatus are given.
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