SOUND-ATTENUATION THROUGH TREES - MEASUREMENTS AND MODELS
SOUND-ATTENUATION THROUGH TREES - MEASUREMENTS AND MODELS
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DOI：
10.1121/1.397150
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发表时间：
1988-11-01
影响因子：
2.4
通讯作者：
HEAP, NW
中科院分区：
文献类型：
--
作者：
PRICE, MA;ATTENBOROUGH, K;HEAP, NW
测量在三个英国林地的宽带声的频率依赖性衰减与距离在中性大气条件下进行比较，通过总结地面，树干和树枝，和树叶的单独贡献的模型的预测。后两个贡献预测的经验修改的多重散射方法。测量光谱的主要特征，即，复合模型以可容忍的方式预测了低于500 Hz的低频过量衰减峰值和频率高于1 kHz时衰减的逐渐增加，以及在三个不同林地区域中观察到的声传播差异。
Measurements obtained at three British woodlands for the frequency-dependent attenuation of broadband sound with distance under neutral atmospheric conditions are compared with the predictions of a model obtained by summing the separate contributions of the ground, the trunks and branches, and the foliage. The two latter contributions are predicted by an empirically modified multiple scattering approach. The principal features of the measured spectra, viz., the low-frequency peak in excess attenuation below 500 Hz and a gradual increase of attenuation with frequency above 1 kHz, are predicted in a tolerable fashion by the composite model, as are the observed differences in acoustic propagation in the three different woodland areas.