道路交通騒音に対する地表面効果の簡易計算法

概要

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sound propagation over ground from a point source having a typical spectrum of motor vehicle noises was investigated by a computational study using theoretical models. Employing new parameters of an average propagation height and a classified resistivity of ground surface, a practical expression to estimate A-weighted excess attenuation was obtained with some charts for various source and receiver locations. Results of field and scale model experiment show a good agreement with the values estimated from this practical models. It is applicable to predict the sound levels of road traffic noise propagating over the ground with a typical acoustic impedance.
社団法人日本音響学会の論文