Journal of the Society of Motion Picture and Television Engineers ( Volume: 59, Issue: 5, November 1952)

[ACTIVE]

Optimum Slit Height in Photographic Sound-Track Reproducers

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 59, No. 5, pp. 379–387
Abstract: For a specified reproducer frequency-response characteristic, there exists an optimum slit height. The optimum slit height depends upon the relative amounts of shot noise from the photosurface and thermal noise from the amplifier circuits. Calculated and measured values of optimum slit height are presented. The slit height which minimizes noise is undesirably large. Shot and thermal noise levels may be ignored if the d-c voltage drop across the effective phototube load resistor, without film in the light path, is of the order of 300 mv or higher.
Publication Date: 1952-11-01
DOI: 10.5594/J04952
ISSN: Print: 0898-042X
Link: https://doi.org/10.5594/J04952
Author(s): W. K. GrimwoodKodak Research Laboratories, Eastman Kodak Co., Rochester 4, N.Y.
J. R. HorakKodak Research Laboratories, Eastman Kodak Co., Rochester 4, N.Y.; Society's Convention at Washington, D.C.
Copyright: © 1952 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Tentative Recommendations for 16-Mm Review Rooms and Reproducing Equipment [Active]
Scanning Losses in Reproduction [Active]
The Optimum Width of Illumination of the Sound Track in Sound-Reproducing Optics [Active]
1. Logan G. , “Optimum response scanning slit-image,” Electronics , 15 : 140 – 143 , June 1942 . EXTERNAL
3. Motion Picture Research Council, Inc. , Technical Bulletin, “Standard Electrical Characteristics for Theater Sound Systems,” p. 7 , Apr. 20, 1948 . EXTERNAL
5. Johnson J. B. Llewellyn F. B. , “Limits to amplification,” Bell Sys. Tech. J. , 14 : 85 – 97 , Jan. 1935 . EXTERNAL
6. Pearson G. L. , “Fluctuation noise in vacuum tubes,” Bell Sys. Tech. J. , 13 : 634 – 654 , Oct. 1934 . EXTERNAL
8. Harris W. A. , “Fluctuations in space-charge-limited currents at moderately high frequencies, Part V. Fluctuations in vacuum tube amplifiers and input systems,” RCA Rev. , 5 : 505 – 525 , Apr. 1941 . EXTERNAL

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W. K. Grimwood and J. R. Horak; Optimum Slit Height in Photographic Sound-Track Reproducers, Journal of the Society of Motion Picture and Television Engineers ( Volume: 59, Issue: 5, November 1952); SMPTE, 1952. Available at https://doi.org/10.5594/J04952

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W. K. Grimwood and J. R. Horak; Optimum Slit Height in Photographic Sound-Track Reproducers, Journal of the Society of Motion Picture and Television Engineers ( Volume: 59, Issue: 5, November 1952); SMPTE, 1952. Available at https://doi.org/10.5594/J04952

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<span class="citation">W. K. Grimwood and J. R. Horak; <cite>Optimum Slit Height in Photographic Sound-Track Reproducers</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 59, Issue: 5, November 1952); SMPTE, 1952. Available at <a href="https://doi.org/10.5594/J04952" target="_blank" rel="noopener">https://doi.org/10.5594/J04952</a></span>

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<li>
W. K. Grimwood and J. R. Horak; <cite id="bib-10-5594-j04952">Optimum Slit Height in Photographic Sound-Track Reproducers</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 59, Issue: 5, November 1952); SMPTE, 1952
<span class="doi">10.5594/J04952</span>
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