Abstract This paper concerns the measurement and prediction of rainfall noise with a particular focus on measurements made using the method described in the ISO rainfall noise standard. Rainfall noise is generated by rain impacting on a surface which excites the surface producing noise. Here, several different models for the force produced by a water droplet impacting on a flat inclined surface are presented. These models are designed for the nominal intense and heavy raindrops described in the ISO standard and are validated against experimental measurements. The best-performed models have been incorporated into theoretical methods for predicting the noise produced by rainfall on a flat inclined panel. These methods are used to produce noise level predictions for heavy rainfall on a standard reference test specimen which are compared with experimental measurements and show moderate agreement. These experiments were conducted using the test method described in the ISO standard. Several issues which we encountered implementing this test method are described and a number of suggestions are made to improve this method. Finally, the theoretical models are used to investigate the effect of different parameters on rainfall noise for the purpose of illustrating potential sources of error during testing using the ISO standard method.

中文翻译：

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关于降雨噪声的测量与预测

摘要 本文涉及降雨噪声的测量和预测，特别关注使用 ISO 降雨噪声标准中描述的方法进行的测量。降雨噪声是由雨水撞击表面，激发表面产生噪声而产生的。在这里，介绍了水滴撞击平坦倾斜表面所产生的力的几种不同模型。这些模型专为 ISO 标准中描述的标称强雨滴和大雨滴而设计，并通过实验测量进行了验证。性能最好的模型已被纳入理论方法中，用于预测平坦倾斜面板上降雨产生的噪声。这些方法用于在标准参考测试样本上产生强降雨的噪声水平预测，将其与实验测量值进行比较并显示出适度的一致性。这些实验是使用 ISO 标准中描述的测试方法进行的。描述了我们在实施此测试方法时遇到的几个问题，并提出了一些改进此方法的建议。最后，理论模型用于研究不同参数对降雨噪声的影响，以说明在使用 ISO 标准方法进行测试过程中的潜在误差来源。描述了我们在实施此测试方法时遇到的几个问题，并提出了一些改进此方法的建议。最后，理论模型用于研究不同参数对降雨噪声的影响，以说明在使用 ISO 标准方法进行测试过程中的潜在误差来源。描述了我们在实施此测试方法时遇到的几个问题，并提出了一些改进此方法的建议。最后，理论模型用于研究不同参数对降雨噪声的影响，以说明在使用 ISO 标准方法进行测试过程中的潜在误差来源。