Transactions of the Society of Motion Picture Engineers (1929)

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Report of Standards and Nomenclature Committee 31 In the early years of this Society's life considerable time was spent by the Standards and Nomenclature Committee in defining specialized terms used in the industry. At that time definitions were written and submitted to the Society and officially approved, or, more usually, rejected. This practice excited an enormous amount of discussion and the results achieved do not seem to be of sufficient importance to warrant the continuance of this procedure. There are, however, many words and phrases used with a highly specialized meaning in the motion picture industry, and the committee has had frequent suggestions submitted relative to the establishment of definitions of these terms. After discussing this matter it was the general consensus of the committee that no attempt should be made to write and adopt official definitions. The committee feels, however, that a rather complete glossary of specialized terms used in the industry may be of considerable value. This subcommittee was therefore requested to prepare a list of definitions of this kind. The second meeting of the committee was held March 25 at which the subcommittees reported progress of work to date. On this occasion the various problems Avere discussed at considerable length and some definite recommendations made. Many of the points brought up were referred back to the committees with request that the chairman report formally by correspondence as soon as possible. Following is a summary of the work of the committee up to the present time. Sound Film Practice There are so many factors and divergent opinions involved in this subject that it has been very difficult to obtain complete agreement as to a proposal for dimensional standards relative to practice in making sound film positive. There seems to be fair agreement relative to certain points, however, and the following proposal is drawn and presented for your consideration. For combined sound and picture on 35 mm. film. It is proposed that a space 0.121 inch inward from the inside edge of the perforations on the right facing the emulsion with image inverted shall be set aside as a total space in which to print the sound record. This space provides for a clearance of 0.004 inch between the inside edge of the perforation and the outside edge of the sound track proper,