Journal of the Society of Motion Picture Engineers ( Volume: 51, Issue: 2, August 1948)
[ACTIVE]
Behavior of Acoustic Materials
Metadata
- Publisher
- SMPTE — White Plains, NY, USA
- Doc Type
- Journal Article
- Content Type
- Original Research
- Abbreviated Title
- J SMPE
- Volume
- 51, No. 2, pp. 192–202
- Abstract
- Theater architects and engineers need accurate data on the performance of acoustic materials, which are used to control the acoustics of theaters. Descriptions of prefabricated materials and acoustic plasters are given. The mechanism of the sound-absorption process in porous materials is briefly described. There are two commonly used absorption coefficients, the “random-incidence” coefficient, and the “normal-incidence” coefficient. The experimental methods used for measuring the two coefficients are described. The significance and limitations of these coefficients in theater design are pointed out, and it is concluded that, at the present time, the random-incidence coefficient is more useful in auditorium design. Recommendations for painting acoustic materials are made, and illustrations of the results of painting are included.
- Publication Date
- 1948-08-01
- DOI
10.5594/J11766- ISSN
- Print:
0097-5834 - Link
- https://doi.org/10.5594/J11766
- Author(s)
- Richard K. CookNational Bureau of Standards, Washington, D. C.
- Copyright
- © 1948 Society of Motion Picture and Television Engineers, Inc.
Bibliographic Reference(s)
- 1. The results of tests made at the National Bureau of Standards have been published in its Letter Circular LC-870 , “Sound Absorption Coefficients of the More Common Acoustic Materials.” . EXTERNAL
- 2. Chrisler V. L. , “Effect of paint on the sound absorption of acoustic materials,” J. Res. Nat. Bur. Stand. , vol. 24 , p. 547 ; RP 1298, 1940 . Reprints may be secured for 10 cents from the Superintendent of Documents, U. S. Government Printing Office, Washington 25, D. C. (stamps not accepted). EXTERNAL
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Richard K. Cook; Behavior of Acoustic Materials, Journal of the Society of Motion Picture Engineers ( Volume: 51, Issue: 2, August 1948); SMPTE, 1948. Available at https://doi.org/10.5594/J11766
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Richard K. Cook; Behavior of Acoustic Materials, Journal of the Society of Motion Picture Engineers ( Volume: 51, Issue: 2, August 1948); SMPTE, 1948. Available at https://doi.org/10.5594/J11766
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Richard K. Cook; Behavior of Acoustic Materials, Journal of the Society of Motion Picture Engineers ( Volume: 51, Issue: 2, August 1948); SMPTE, 1948. Available at https://doi.org/10.5594/J11766
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<span class="citation">Richard K. Cook; <cite>Behavior of Acoustic Materials</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 51, Issue: 2, August 1948); SMPTE, 1948. Available at <a href="https://doi.org/10.5594/J11766" target="_blank" rel="noopener">https://doi.org/10.5594/J11766</a></span>
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Richard K. Cook; Behavior of Acoustic Materials, Journal of the Society of Motion Picture Engineers ( Volume: 51, Issue: 2, August 1948); SMPTE, 1948
doi: 10.5594/J11766
url: https://doi.org/10.5594/J11766
doi: 10.5594/J11766
url: https://doi.org/10.5594/J11766
Snippet:
<li> Richard K. Cook; <cite id="bib-10-5594-j11766">Behavior of Acoustic Materials</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 51, Issue: 2, August 1948); SMPTE, 1948 <span class="doi">10.5594/J11766</span> </li>