Acoustic intensity measurements at the surface
作者:
Thomas H. Hodgson,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1984)
卷期:
Volume 75,
issue S1
页码: 1-1
ISSN:0001-4966
年代: 1984
DOI:10.1121/1.2021314
出版商: Acoustical Society of America
数据来源: AIP
摘要:
A surface acoustic intensity meter is described for measuring acoustic intensity at a vibrating surface using a fiber optic lever as a displacement transducer and a condenser microphone to measure surface pressure. Digital signal processing using a two‐channel FFT analyzer allows the calculation of surface intensity as a function of frequency. The technique has been tested in an anechoic chamber on a point monopole and a steel plate clamped at the edges. Calculated sound power levels are compared with results obtained by traditional techniques.
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