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Monopole radiation in the presence of an absorbing plane

✍ Scribed by M.E. Delany; E.N. Bazley

Publisher
Elsevier Science
Year
1970
Tongue
English
Weight
583 KB
Volume
13
Category
Article
ISSN
0022-460X

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✦ Synopsis

Two theoretical solutions for the field of a point sound source above a plane boundary between air and an absorbing material are discussed. The validity of approximations based on the plane-wave reflection coefficient and on the modified image method are also examined. Results of measurements made with a source in and above slabs of absorbent material are shown to be in agreement with theoretical results. The performance of free-field rooms having plane absorbent treatment and ground-reflection effects in the measurement of aircraft noise spectra can thus be predicted.

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Experimental investigation of the power
Experimental investigation of the power radiated by a monopole above a reflected plane
✍ M.K. Lim πŸ“‚ Article πŸ“… 1982 πŸ› Elsevier Science 🌐 English βš– 188 KB

The presence of reflecting boundaries causes the acoustic power output of a point source to increase. As existing experimental data were found to be inadequate, experiments have been carried out in this study to determine the effect of a reflecting plane on the power radiated by a point source. A co