Impedance models for grass‐covered ground
作者:
R. J. Donato,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1977)
卷期:
Volume 61,
issue 6
页码: 1449-1452
ISSN:0001-4966
年代: 1977
DOI:10.1121/1.381461
出版商: Acoustical Society of America
数据来源: AIP
摘要:
Three different models are described in an attempt to account for the frequency dependence of measured impedances of grass‐covered ground. These are (a) a homogeneous ground of constant porosity, (b) a finite layer, also of constant porosity, overlying an infinite impedance, and (c) porosity decreasing with depth. The latter structure provides the best fit to the experimental data.
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