INFLUENCE OF DIFFUSIVITY ON THE TRANSMISSION LOSS OF A SINGLE-LEAF WALL

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作者：
DE BRUIJN A
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来源：
Journal of the Acoustical Society of America | 1970年 / 47卷 / 2 pt 1期
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JASMA - MATHEMATICAL INSTRUMENTS;
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摘要：
L. Cremer's theory of sound transmission for a single-leaf wall is transformed into a more general formulation in which the exciting pressure is expressed in terms of the spatial cross-correlation. The correlation coefficient was measured in a reverberation room just in front of the wall under test. The sound-transmission loss of a single gypsum-board wall was calculated employing these diffusivity measurements and compared with experimental data. Agreement between theory and experiment is good, especially in the frequency range below the coincidence frequency. Finnaly, a few fictitious quasidiffuse sound fields are investigated in further study of the influence of the degree of diffusivity upon transmission loss.
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页码：667 / 675
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