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Journal of the Society of Motion Picture Engineers ( Volume: 29, Issue: 3, September 1937)
[ACTIVE]

A Dubbing Rehearsal Channel

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
Preparation of sound effects, music, and dialog tracks for dubbing requires accurate synchronization of each sound with the corresponding action. This is ordinarily accomplished by a preliminary step in which the synchronism of one sound-track at a time is checked against the action in a moviola, in which the picture is seen through a small viewing lens. The image being small, the accuracy with which synchronism may be checked is not good. Hence this is followed by a final step, in which the synchronism of all tracks is checked during rehearsals in the dubbing-room proper. Owing to the ponderous character of the dubbing machinery the latter process is quite slow and laborious. This paper describes the form and use of a machine that permits accurate synchronism of the various sound-tracks with the corresponding action, but with all the mechanical freedom of the usual moviola. The machine will accommodate six sound-tracks, with provision for controlling the output level from each, and may be instantly started, stopped, or reversed. The mechanical design facilitates threading and easy displacement of any sound-track by a known amount to bring it into synchronism. The action is projected upon a screen 4 1/2 × 4 feet in size, which enables accurate observation of the degree of synchronism attained.
Publication Date
1937-09-01
DOI
10.5594/J17375
Link
https://doi.org/10.5594/J17375
Author(s)
H. G. Tasker
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H. G. Tasker; A Dubbing Rehearsal Channel, Journal of the Society of Motion Picture Engineers ( Volume: 29, Issue: 3, September 1937); SMPTE, 1937. Available at https://doi.org/10.5594/J17375
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H. G. Tasker; A Dubbing Rehearsal Channel, Journal of the Society of Motion Picture Engineers ( Volume: 29, Issue: 3, September 1937); SMPTE, 1937. Available at https://doi.org/10.5594/J17375

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H. G. Tasker; A Dubbing Rehearsal Channel, Journal of the Society of Motion Picture Engineers ( Volume: 29, Issue: 3, September 1937); SMPTE, 1937. Available at https://doi.org/10.5594/J17375
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<span class="citation">H. G. Tasker; <cite>A Dubbing Rehearsal Channel</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 29, Issue: 3, September 1937); SMPTE, 1937. Available at <a href="https://doi.org/10.5594/J17375" target="_blank" rel="noopener">https://doi.org/10.5594/J17375</a></span>

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Preview:
H. G. Tasker; A Dubbing Rehearsal Channel, Journal of the Society of Motion Picture Engineers ( Volume: 29, Issue: 3, September 1937); SMPTE, 1937
doi: 10.5594/J17375
url: https://doi.org/10.5594/J17375
Snippet:
<li>
H. G. Tasker; <cite id="bib-10-5594-j17375">A Dubbing Rehearsal Channel</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 29, Issue: 3, September 1937); SMPTE, 1937
<span class="doi">10.5594/J17375</span>
</li>