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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
Doc Type
Journal Article
Article Type
research-article
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
Link
https://doi.org/10.5594/J11801
Author(s)
Joseph C. Frommer
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Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J11801.json

Reference this Doc

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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>