Propagation from a point source over a rough finite impedance boundary
Propagation from a point source over a rough finite impedance boundary
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从点源在粗略有限阻抗边界上的传播
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
S. Taherzadeh
中科院分区：
文献类型：
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作者：
K. Attenborough;S. Taherzadeh
在消声室中的人工粗糙表面上的点源的声音的过量衰减的测量与Howe [J. Sound Vib. 98，83-94（1985）]和托尔斯泰[J. Acoust.美国社会72，960-072（1982）]。修改后的理论彼此一致，并在可容忍的协议与硬或近硬边界的数据。修改后的托尔斯泰公式，它允许的粗糙度有一个阻抗，不同于周围的平面的阻抗，被发现给粗糙的有限阻抗表面上的传播数据更好的协议。
Measurements of the excess attenuation of sound from a point source over artificially rough surfaces in an anechoic chamber are compared with predictions from modified forms of theories by Howe [J. Sound Vib. 98, 83–94 (1985)] and by Tolstoy [J. Acoust. Soc. Am. 72, 960–072 (1982)]. The modified theories agree with each other and are in tolerable agreement with data over hard or nearly hard boundaries. The modified Tolstoy formulation, which allows the roughnesses to have an impedance that differs from the impedance of the surrounding plane, is found to give better agreement with data for propagation over rough finite impedance surfaces.