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Journal of the Society of Motion Picture Engineers ( Volume: 49, Issue: 4, October 1947)
[ACTIVE]

The Optimum Width of Illumination of the Sound Track in Sound-Reproducing Optics

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPE
Volume
49, No. 4, pp. 361–363
Abstract
When deciding on the width in direction of film travel of the illuminated area on the sound track (“scanning width”), a compromise has to be found between two contradictory requirements: more scanning width allows the passage of more light and gives a proportionally higher signal level for low frequencies, but it will cause an increased fall off at higher frequencies, where the scanning width covers an appreciable portion of one wave. Accordingly there exists for each frequency a scanning width with which the signal output is highest.
Publication Date
1947-10-01
DOI
10.5594/J11801
ISSN
Print: 0097-5834
Link
https://doi.org/10.5594/J11801
Author(s)
Joseph C. FrommerConsulting Engineer, 1525 Teakwood Ave., Cincinnati 24, Ohio.
Copyright
© 1947 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • The Aperture Effect [Active]
  • 2 Zworykin V. K. Morton G. A. : “Television” , John Wiley and Sons , New York, N. Y. , 1940 , p. 13 , Eq 11.1. EXTERNAL
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Preview:
Joseph C. Frommer; The Optimum Width of Illumination of the Sound Track in Sound-Reproducing Optics, Journal of the Society of Motion Picture Engineers ( Volume: 49, Issue: 4, October 1947); SMPTE, 1947. Available at https://doi.org/10.5594/J11801
Snippet:
Joseph C. Frommer; The Optimum Width of Illumination of the Sound Track in Sound-Reproducing Optics, Journal of the Society of Motion Picture Engineers ( Volume: 49, Issue: 4, October 1947); SMPTE, 1947. Available at https://doi.org/10.5594/J11801

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Preview:
Joseph C. Frommer; The Optimum Width of Illumination of the Sound Track in Sound-Reproducing Optics, Journal of the Society of Motion Picture Engineers ( Volume: 49, Issue: 4, October 1947); SMPTE, 1947. Available at https://doi.org/10.5594/J11801
Snippet:
<span class="citation">Joseph C. Frommer; <cite>The Optimum Width of Illumination of the Sound Track in Sound-Reproducing Optics</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 49, Issue: 4, October 1947); SMPTE, 1947. Available at <a href="https://doi.org/10.5594/J11801" target="_blank" rel="noopener">https://doi.org/10.5594/J11801</a></span>

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Preview:
Joseph C. Frommer; The Optimum Width of Illumination of the Sound Track in Sound-Reproducing Optics, Journal of the Society of Motion Picture Engineers ( Volume: 49, Issue: 4, October 1947); SMPTE, 1947
doi: 10.5594/J11801
url: https://doi.org/10.5594/J11801
Snippet:
<li>
Joseph C. Frommer; <cite id="bib-10-5594-j11801">The Optimum Width of Illumination of the Sound Track in Sound-Reproducing Optics</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 49, Issue: 4, October 1947); SMPTE, 1947
<span class="doi">10.5594/J11801</span>
</li>

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