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Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 6, June 1949)
[ACTIVE]

Direct-Positive Variable-Density Recording with the Light Valve

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPE
Volume
52, No. 6, pp. 690–698
Abstract
A method is described for making “direct-positive” variable-density sound records. Improvements over previous records are high output level, high signal-to-noise ratio, low distortion, and elimination of printer loss and distortion. Standard light valves with a superposed high-frequency bias are used in making the record.
Publication Date
1949-06-01
DOI
10.5594/J16534
ISSN
Print: 0097-5834
Link
https://doi.org/10.5594/J16534
Author(s)
C. R. KeithWestern Electric Company, New York 5, New York, and Los Angeles 38, California
V. PagliaruloWestern Electric Company, New York 5, New York, and Los Angeles 38, California
Copyright
© 1949 Society of Motion Picture and Television Engineers, Inc.

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C. R. Keith and V. Pagliarulo; Direct-Positive Variable-Density Recording with the Light Valve, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 6, June 1949); SMPTE, 1949. Available at https://doi.org/10.5594/J16534
Snippet:
C. R. Keith and V. Pagliarulo; Direct-Positive Variable-Density Recording with the Light Valve, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 6, June 1949); SMPTE, 1949. Available at https://doi.org/10.5594/J16534

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Preview:
C. R. Keith and V. Pagliarulo; Direct-Positive Variable-Density Recording with the Light Valve, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 6, June 1949); SMPTE, 1949. Available at https://doi.org/10.5594/J16534
Snippet:
<span class="citation">C. R. Keith and V. Pagliarulo; <cite>Direct-Positive Variable-Density Recording with the Light Valve</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 6, June 1949); SMPTE, 1949. Available at <a href="https://doi.org/10.5594/J16534" target="_blank" rel="noopener">https://doi.org/10.5594/J16534</a></span>

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Preview:
C. R. Keith and V. Pagliarulo; Direct-Positive Variable-Density Recording with the Light Valve, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 6, June 1949); SMPTE, 1949
doi: 10.5594/J16534
url: https://doi.org/10.5594/J16534
Snippet:
<li>
C. R. Keith and V. Pagliarulo; <cite id="bib-10-5594-j16534">Direct-Positive Variable-Density Recording with the Light Valve</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 6, June 1949); SMPTE, 1949
<span class="doi">10.5594/J16534</span>
</li>

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