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Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 5, May 1941)
[ACTIVE]

Reduction of Development Sprocket-Hole Modulation

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPE
Volume
36, No. 5, pp. 475–487
Abstract
One of the contributing factors to sound-track degradation is sprocket-hole modulation. This is more commonly known as 96-cycle modulation, and results from non-uniform action of developer around the perforations during the time of processing. Its chief remedy is turbulation. The practical aspects of controlling the amount of sprocket-hole modulation is described herein. Curves showing the increase of this distortion due to diminished turbulation are included as well as those showing the intermodulation of recorded sound by sprocket-hole agitation. The turbulation method employed at the Film Laboratory of Twentieth Century-Fox Film Corporation at Hollywood is disclosed and the various sensitometric means of control relative to this problem are given.
Publication Date
1941-05-01
DOI
10.5594/J12900
ISSN
Print: 0097-5834
Link
https://doi.org/10.5594/J12900
Author(s)
M. LeshingTwentieth Century-Fox Film Corp., Hollwyood, Calif.
T. IngmanTwentieth Century-Fox Film Corp., Hollwyood, Calif.
K. PierTwentieth Century-Fox Film Corp., Hollwyood, Calif.
Copyright
© 1941 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • 1. Frayne J. G. Pagliarulo V. : “The Influence of Sprocket-Holes upon the Development of Adjacent Sound-Track Areas.” J. Soc. Mot. Pict. Eng. , XXVIII (March, 1937 ), p. 235 . EXTERNAL
  • 2. Crabtree J. Waddell J. H. : “Directional Effects in Sound-Film Processing,” J. Soc. Mot. Pict. Eng. , XXI (Nov., 1933 ), p. 351 . EXTERNAL
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M. Leshing, T. Ingman, and K. Pier; Reduction of Development Sprocket-Hole Modulation, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 5, May 1941); SMPTE, 1941. Available at https://doi.org/10.5594/J12900
Snippet:
M. Leshing, T. Ingman, and K. Pier; Reduction of Development Sprocket-Hole Modulation, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 5, May 1941); SMPTE, 1941. Available at https://doi.org/10.5594/J12900

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M. Leshing, T. Ingman, and K. Pier; Reduction of Development Sprocket-Hole Modulation, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 5, May 1941); SMPTE, 1941. Available at https://doi.org/10.5594/J12900
Snippet:
<span class="citation">M. Leshing, T. Ingman, and K. Pier; <cite>Reduction of Development Sprocket-Hole Modulation</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 5, May 1941); SMPTE, 1941. Available at <a href="https://doi.org/10.5594/J12900" target="_blank" rel="noopener">https://doi.org/10.5594/J12900</a></span>

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M. Leshing, T. Ingman, and K. Pier; Reduction of Development Sprocket-Hole Modulation, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 5, May 1941); SMPTE, 1941
doi: 10.5594/J12900
url: https://doi.org/10.5594/J12900
Snippet:
<li>
M. Leshing, T. Ingman, and K. Pier; <cite id="bib-10-5594-j12900">Reduction of Development Sprocket-Hole Modulation</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 5, May 1941); SMPTE, 1941
<span class="doi">10.5594/J12900</span>
</li>

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