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Journal of the Society of Motion Picture Engineers ( Volume: 43, Issue: 5, November 1944)
[ACTIVE]

Noise-Reduction Anticipation Circuits

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
The use of an additional microphone to provide an anticipation signal to operate noise-reduction circuits is described, the anticipation microphone being placed ahead of the signal microphone by sufficient distance so that the noise-reduction element in a modulator is fully opened to permit recording of the maximum signal amplitude. In rerecording a special hill-and-dale record is made of the last rehearsal. This record is then played back during the take, the output being fed to the noise-reduction circuit and anticipation being accomplished by moving the needle ahead on the disk by an appropriate distance.
Publication Date
1944-11-01
DOI
10.5594/J12879
Link
https://doi.org/10.5594/J12879
Author(s)
John G. Frayne
Source Data (JSON)

Full registry record with provenance metadata. Open directly: /api/doc/10.5594-J12879.json

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John G. Frayne; Noise-Reduction Anticipation Circuits, Journal of the Society of Motion Picture Engineers ( Volume: 43, Issue: 5, November 1944); SMPTE, 1944. Available at https://doi.org/10.5594/J12879
Snippet:
John G. Frayne; Noise-Reduction Anticipation Circuits, Journal of the Society of Motion Picture Engineers ( Volume: 43, Issue: 5, November 1944); SMPTE, 1944. Available at https://doi.org/10.5594/J12879

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John G. Frayne; Noise-Reduction Anticipation Circuits, Journal of the Society of Motion Picture Engineers ( Volume: 43, Issue: 5, November 1944); SMPTE, 1944. Available at https://doi.org/10.5594/J12879
Snippet:
<span class="citation">John G. Frayne; <cite>Noise-Reduction Anticipation Circuits</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 43, Issue: 5, November 1944); SMPTE, 1944. Available at <a href="https://doi.org/10.5594/J12879" target="_blank" rel="noopener">https://doi.org/10.5594/J12879</a></span>

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Preview:
John G. Frayne; Noise-Reduction Anticipation Circuits, Journal of the Society of Motion Picture Engineers ( Volume: 43, Issue: 5, November 1944); SMPTE, 1944
doi: 10.5594/J12879
url: https://doi.org/10.5594/J12879
Snippet:
<li>
John G. Frayne; <cite id="bib-10-5594-j12879">Noise-Reduction Anticipation Circuits</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 43, Issue: 5, November 1944); SMPTE, 1944
<span class="doi">10.5594/J12879</span>
</li>