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Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 3, March 1949)
[ACTIVE]

Silent Playback and Public-Address System

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPE
Volume
52, No. 3, pp. 313–319
Abstract
The silent playback and public-address system provides a unique time-saving aid in photographing and recording dialog sequences having musical backgrounds. By means of a music- or speech-modulated 100-kilocycle transmitter, a supersonic-frequency magnetic field is generated throughout the scene area. The magnetic field includes secondary currents in concealed loops worn by the actors. These signals are demodulated in miniature batteryless units and energize small hearing-aid earphones. The earphones may be worn without concealment on distant and medium scenes. On close-ups the earphones are concealed and the sound is coupled to the ear through small plastic tubing camouflaged by make-up. Several types of loops, demodulators, and earphone units meet the varying needs of the scenes to be photographed and recorded. The stage microphone and sound-on-film recording channel is free from 100-kilocycle interference.
Publication Date
1949-03-01
DOI
10.5594/J12531
ISSN
Print: 0097-5834
Link
https://doi.org/10.5594/J12531
Author(s)
Bruce H. DenneyParamount Pictures, Hollywood, California
Robert J. CarrParamount Pictures, Hollywood, California
Copyright
© 1949 Society of Motion Picture and Television Engineers, Inc.
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Bruce H. Denney and Robert J. Carr; Silent Playback and Public-Address System, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 3, March 1949); SMPTE, 1949. Available at https://doi.org/10.5594/J12531
Snippet:
Bruce H. Denney and Robert J. Carr; Silent Playback and Public-Address System, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 3, March 1949); SMPTE, 1949. Available at https://doi.org/10.5594/J12531

HTML (ISO 690 compliant)

Preview:
Bruce H. Denney and Robert J. Carr; Silent Playback and Public-Address System, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 3, March 1949); SMPTE, 1949. Available at https://doi.org/10.5594/J12531
Snippet:
<span class="citation">Bruce H. Denney and Robert J. Carr; <cite>Silent Playback and Public-Address System</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 3, March 1949); SMPTE, 1949. Available at <a href="https://doi.org/10.5594/J12531" target="_blank" rel="noopener">https://doi.org/10.5594/J12531</a></span>

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Preview:
Bruce H. Denney and Robert J. Carr; Silent Playback and Public-Address System, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 3, March 1949); SMPTE, 1949
doi: 10.5594/J12531
url: https://doi.org/10.5594/J12531
Snippet:
<li>
Bruce H. Denney and Robert J. Carr; <cite id="bib-10-5594-j12531">Silent Playback and Public-Address System</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 52, Issue: 3, March 1949); SMPTE, 1949
<span class="doi">10.5594/J12531</span>
</li>

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