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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
Doc Type
Journal Article
Article Type
research-article
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
Link
https://doi.org/10.5594/J16534
Author(s)
C. R. Keith, V. Pagliarulo
Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J16534.json

Reference this Doc

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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

HTML (ISO 690 compliant)

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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:
<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>

SMPTE Icon SMPTE's HTML Pub

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>