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Journal of the Society of Motion Picture Engineers ( Volume: 37, Issue: 10, October 1941)
[ACTIVE]

Mechanical and Optical Equipment for the Stereophonic Sound-Film System

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
The same mechanism is employed for propelling the film in both recording and reproducing. To permit recording the longer orchestral selections without interruption, the machines are designed to handle film in 2000-ft lengths. Special features of the film-propulsion system for obtaining great uniformity of speed at the translation points are described. The three signal-currents and one control-channel current are recorded by means of light-valves of identical construction. All four tracks are exposed while the film is passing over a free-running supporting roller, mounted on the same shaft with a new type of internally damped roller. In reproduction, each track is exposed through an objective of high aperture to light from an incandescent source. After passing through the film, the light from each track is carried by a glass rod to a photoelectric cell.
Publication Date
1941-10-01
DOI
10.5594/J09957
Link
https://doi.org/10.5594/J09957
Author(s)
E. C. Wente, R. Biddulph, L. A. Elmer, A. B. Anderson
Source Data (JSON)

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E. C. Wente, R. Biddulph, L. A. Elmer, and A. B. Anderson; Mechanical and Optical Equipment for the Stereophonic Sound-Film System, Journal of the Society of Motion Picture Engineers ( Volume: 37, Issue: 10, October 1941); SMPTE, 1941. Available at https://doi.org/10.5594/J09957
Snippet:
E. C. Wente, R. Biddulph, L. A. Elmer, and A. B. Anderson; Mechanical and Optical Equipment for the Stereophonic Sound-Film System, Journal of the Society of Motion Picture Engineers ( Volume: 37, Issue: 10, October 1941); SMPTE, 1941. Available at https://doi.org/10.5594/J09957

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E. C. Wente, R. Biddulph, L. A. Elmer, and A. B. Anderson; Mechanical and Optical Equipment for the Stereophonic Sound-Film System, Journal of the Society of Motion Picture Engineers ( Volume: 37, Issue: 10, October 1941); SMPTE, 1941. Available at https://doi.org/10.5594/J09957
Snippet:
<span class="citation">E. C. Wente, R. Biddulph, L. A. Elmer, and A. B. Anderson; <cite>Mechanical and Optical Equipment for the Stereophonic Sound-Film System</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 37, Issue: 10, October 1941); SMPTE, 1941. Available at <a href="https://doi.org/10.5594/J09957" target="_blank" rel="noopener">https://doi.org/10.5594/J09957</a></span>

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Preview:
E. C. Wente, R. Biddulph, L. A. Elmer, and A. B. Anderson; Mechanical and Optical Equipment for the Stereophonic Sound-Film System, Journal of the Society of Motion Picture Engineers ( Volume: 37, Issue: 10, October 1941); SMPTE, 1941
doi: 10.5594/J09957
url: https://doi.org/10.5594/J09957
Snippet:
<li>
E. C. Wente, R. Biddulph, L. A. Elmer, and A. B. Anderson; <cite id="bib-10-5594-j09957">Mechanical and Optical Equipment for the Stereophonic Sound-Film System</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 37, Issue: 10, October 1941); SMPTE, 1941
<span class="doi">10.5594/J09957</span>
</li>