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SMPTE Journal ( Volume: 87, Issue: 3, March 1978)
[ACTIVE]

A Synchronization Control Unit for Super-8 Sound Recording, Editing and Sound Transfer to Magnetic-Striped Film

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
An electronic synchronization control unit was built for two-strand sound recording, two-strand editing of magnetic sound tape and picture, and automatic transfer in synchronism onto striped film. It ensures synchronism even when the tape recorder and film projector used in this procedure are started separately. The control unit is based on an electronic counter circuit, which counts individual synchronization pulses recorded on the lower half of the tape and individual film frames as they pass through the film gate of the projector. Although our system was built for super-8 equipment, the method is applicable to any film format. The heart of the control unit is a 12-bit electronic counter. In two-strand synchronous image and sound recording, sync pulses are recorded by means of an intermittent camera switch and a tone generator. In two-strand editing the unit detects the difference in either direction (maximum 2048 frames) between synchronization pulses recorded on the sound tape and film frames passing through a projector. A light emitting diode indicates whether the sound is ahead of or behind the picture. For synchronized transfer of sound from tape to striped film, the circuit automatically matches by feedback control the tape speed to that of the projector used.
Publication Date
1978-03-01
DOI
10.5594/J17411
Link
https://doi.org/10.5594/J17411
Author(s)
Einar Sudmann, Rune Aaslid
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Einar Sudmann and Rune Aaslid; A Synchronization Control Unit for Super-8 Sound Recording, Editing and Sound Transfer to Magnetic-Striped Film, SMPTE Journal ( Volume: 87, Issue: 3, March 1978); SMPTE, 1978. Available at https://doi.org/10.5594/J17411
Snippet:
Einar Sudmann and Rune Aaslid; A Synchronization Control Unit for Super-8 Sound Recording, Editing and Sound Transfer to Magnetic-Striped Film, SMPTE Journal ( Volume: 87, Issue: 3, March 1978); SMPTE, 1978. Available at https://doi.org/10.5594/J17411

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Preview:
Einar Sudmann and Rune Aaslid; A Synchronization Control Unit for Super-8 Sound Recording, Editing and Sound Transfer to Magnetic-Striped Film, SMPTE Journal ( Volume: 87, Issue: 3, March 1978); SMPTE, 1978. Available at https://doi.org/10.5594/J17411
Snippet:
<span class="citation">Einar Sudmann and Rune Aaslid; <cite>A Synchronization Control Unit for Super-8 Sound Recording, Editing and Sound Transfer to Magnetic-Striped Film</cite>, SMPTE Journal ( Volume: 87, Issue: 3, March 1978); SMPTE, 1978. Available at <a href="https://doi.org/10.5594/J17411" target="_blank" rel="noopener">https://doi.org/10.5594/J17411</a></span>

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Einar Sudmann and Rune Aaslid; A Synchronization Control Unit for Super-8 Sound Recording, Editing and Sound Transfer to Magnetic-Striped Film, SMPTE Journal ( Volume: 87, Issue: 3, March 1978); SMPTE, 1978
doi: 10.5594/J17411
url: https://doi.org/10.5594/J17411
Snippet:
<li>
Einar Sudmann and Rune Aaslid; <cite id="bib-10-5594-j17411">A Synchronization Control Unit for Super-8 Sound Recording, Editing and Sound Transfer to Magnetic-Striped Film</cite>, SMPTE Journal ( Volume: 87, Issue: 3, March 1978); SMPTE, 1978
<span class="doi">10.5594/J17411</span>
</li>