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Standardization Needs for 16mm Magnetic Sound
By ELLIS W. D'ARCY
Industry requirements for 16mm magnetic sound standards are outlini with respect to universal reproducibility, and test film needs for equipme manufacture and maintenance are described.
E
IVER SINCE ITS inception our Society has undertaken the responsibility of recommending standards for the motion picture industry. This has been one of the major constructive actions by the Society aiding the motion picture art to reach its present stage of technical quality. These standardization actions also are very helpful in introducing new developments into the motion picture field, thus enhancing the existing film technique. The Society's standardization activities are therefore an indispensable motion picture industry function.
It should be of value here to review briefly how standards and recommended practices are established. The full procedure was published on page 155 of the August 1952 Journal.
Presented on October 10, 1952, at the Society's Convention at Washington, D.C., by Ellis W. D'Arcy, De Vry Corp., 1 1 1 1 W. Armitage Ave. Chicago 14. (This paper was received on December 18, 1952. Because of its coverage of standardization, it was reviewed not only by the Board of Editors but also by the Sound Committee and its Magnetic Sound Subcommittee. It was approved for publication on February 20, 1953.)
Any request to the Society for a stan* ard is referred by the Society's Engineel ing Vice-President to the responsibi Engineering Committee, with a recori mendation for action. Upon consider i tion by the committees, the proposal, ' approved, is transmitted to the Society j Standards Committee which passes cjj the findings of the respective Engineerir \ Committees before recommendir i Journal publication for trial and criticisr Subsequently, a proposed standard I transmitted to the American Standard Association for final issuance as a motic picture standard. Specifically, with r spect to magnetic sound for motion pi ture use, the responsibility for magnet standards has been assigned to ti.j Sound Committee of which John Hilliai ! is now Chairman. A Magnetic Sour I Subcommittee has been established i| deal specifically with magnetic sound c 1 film. Glenn Dimmick is Chairman •! this Subcommittee.
The determination of electrical pi production characteristics has been a signed as a single problem to a Sul , committee of the Magnetic Soun ; Subcommittee. This task committee hi j the responsibility of making for magnet sound a recommendation similar to tto !
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April 1953 Journal of the SMPTE Vol. 60