Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 8, August 1940)

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The Control of Sound in Theaters and Preview Rooms

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 35, No. 8, pp. 111–125
Abstract: Acoustical science can now be applied to better advantage than ever before in the planning of modern motion picture theaters. A broader understanding of the purposes and principles of acoustical design and treatment is needed, however, to make this application universal. The Society is in a position to do much toward fulfilling this need. Greater attention should be given to the design and development of the basic theater structure. The shaping of surfaces for the control of sound reflections is effective and can be kept within a desirable architectural limit. Furthermore, such shaping can be made to function successfully if the basic design is developed to control reverberation. The all too prevalent idea that “the more acoustical material used, the better the results” should be discouraged. Acoustical materials can be used more efficiently if they are distributed asymmetrically with due regard to the geometry of the reflecting surfaces. In general, they should not be concentrated in large compact areas on single surfaces. This principle of treatment and its effect upon the acoustical characteristics of theaters is discussed. Instrumental measurements of the effect of surface parallelism upon the frequency reverberation characteristic of a rectangular room are shown. The results are of particular interest with respect to the acoustical treatment of preview rooms.
Publication Date: 1940-08-01
DOI: 10.5594/J10055
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J10055
Author(s): C. C. PotwinElectrical Research Products, Inc., New York, N. Y.
Copyright: © 1940 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1 Sabine W. C. : “Collected Papers on Acoustics,” Harvard University Press , Cambridge, Mass. EXTERNAL
2 Yring E. F. C. : “Reverberation Time Measurements in Coupled Rooms,” J. Acoust. Soc. Amer. , 3 ( 1931 ), p. 181 . EXTERNAL
3 MacNair W. A. : “Optimum Reverberation Time for Auditoriums,” J. Acoust. Soc. Amer. , 1 ( 1930 ), p. 242 . EXTERNAL
4 Fletcher H. Unson M. A. W. : “Loudness, Its Definition, Measurement and Calculation,” J. Acoust. Soc. Amer. , 5 ( 1933 ), p. 82 . EXTERNAL
5 Maxfield J. P. Otwin P. C. C. : “Planning Functionally for Good Acoustics,” J. Acoust. Soc. Amer. , 11 ( 1940 ), p. 383 . EXTERNAL
6 Potwin C. C. Axfield M. P. J. : “A Modern Concept of Acoustical Design,” J. Acoust. Soc. Amer. , 11 ( 1939 ), p. 48 . EXTERNAL
7 Fletcher H. Teinberg S. C. J. : “Articulation Testing Methods,” Bell Syst. Tech. J. (Oct., 1929 ); also J. Acoust. Soc. Amer. (Supplement to Jan., 1930). EXTERNAL
8 Potwin C. C. Schlanger B. : “Coördinating Acoustics and Architecture in the Design of the Motion Picture Theater,” J. Soc. Mot. Pict. Eng. , XXXII ( 1939 ), p. 156 . EXTERNAL

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C. C. Potwin; The Control of Sound in Theaters and Preview Rooms, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 8, August 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J10055

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C. C. Potwin; The Control of Sound in Theaters and Preview Rooms, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 8, August 1940); SMPTE, 1940. Available at https://doi.org/10.5594/J10055

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<span class="citation">C. C. Potwin; <cite>The Control of Sound in Theaters and Preview Rooms</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 8, August 1940); SMPTE, 1940. Available at <a href="https://doi.org/10.5594/J10055" target="_blank" rel="noopener">https://doi.org/10.5594/J10055</a></span>

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C. C. Potwin; The Control of Sound in Theaters and Preview Rooms, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 8, August 1940); SMPTE, 1940
doi: 10.5594/J10055
url: https://doi.org/10.5594/J10055

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C. C. Potwin; <cite id="bib-10-5594-j10055">The Control of Sound in Theaters and Preview Rooms</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 35, Issue: 8, August 1940); SMPTE, 1940
<span class="doi">10.5594/J10055</span>
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Referenced By

Auditorium Acoustics [Active]