Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 6, June 1941)

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General and Design Considerations of Low Noise Microphones

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: The physical and physiological side of the problem of thermal agitation noise in microphones is reviewed, in connection with a recently proposed noise rating. Following this, different microphone types are discussed and compared with regard to their noise performance, and to possibilities and inherent limitations of noise reduction. Multiple piezoelectric microphones which lend themselves particularly well to the design of quiet units are treated in more detail. The design principles of the associated tube circuits for full realization of the inherent efficiency or noise performance of microphones are discussed. Application is made to the design of minimum-noise combinations of different microphone types; some performance data are given of an experimental unidirectional model composed of piezoelectric elements and a ribbon.
Publication Date: 1941-06-01
DOI: 10.5594/J09982
Link: https://doi.org/10.5594/J09982
Author(s): A. L. Williams, H. G. Baerwald

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A. L. Williams and H. G. Baerwald; General and Design Considerations of Low Noise Microphones, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 6, June 1941); SMPTE, 1941. Available at https://doi.org/10.5594/J09982

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A. L. Williams and H. G. Baerwald; General and Design Considerations of Low Noise Microphones, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 6, June 1941); SMPTE, 1941. Available at https://doi.org/10.5594/J09982

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<span class="citation">A. L. Williams and H. G. Baerwald; <cite>General and Design Considerations of Low Noise Microphones</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 6, June 1941); SMPTE, 1941. Available at <a href="https://doi.org/10.5594/J09982" target="_blank" rel="noopener">https://doi.org/10.5594/J09982</a></span>

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<li>
A. L. Williams and H. G. Baerwald; <cite id="bib-10-5594-j09982">General and Design Considerations of Low Noise Microphones</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 36, Issue: 6, June 1941); SMPTE, 1941
<span class="doi">10.5594/J09982</span>
</li>