【摘要】 从点声源的理论出发 ,对列车运行噪声进行预测计算 ,采用一列车通过时的单发暴露声级、时间特性的最大声压级和一定时间内的等效声级等作为噪声评价量 ,编制了相应的可视化软件 ,并将预测结果与日本预测方法进行对比 ,证明该软件预测计算的准确性及采用点声源理论进行预测评价的可行性。更多还原

【Abstract】 The train running noise has been predicted w ith the theory of point sound source. The sound exposure level of a train set pa ss, equivalent continuous sound level and maximum sound level of a train set pas s has been taken as estimation values.The corresponding visual software has been developed,and the prediction is compared with the Japanese predicting me t hod. It proves the accuracy of the prediction of the software and the feasibilit y of the prediction and evaluation with the theory of point sound source.更多还原