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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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