声学射击场噪声第3部分:声传播计算

[中文适用范围]： 本文件规定了预测给定接收点单次拍摄的声音暴露水平的方法。 给出了根据声音暴露水平计算其他声学指数的指南。 该预测基于 ISO 17201-1 中定义的枪口爆炸的角源能量分布或使用 ISO 17201-2 中的值计算得出。 本文件适用于口径小于 20 毫米或爆炸装药量小于 50 克 TNT 当量的武器，其距离峰值压力（包括射弹声音的贡献）小于 1 kPa (154 dB)。 注：可以适用可能更严格的国家或其他法规。 [外文原描述]： This document specifies methods of predicting the sound exposure level of shooting sound for a single shot at a given reception point. Guidelines are given to calculate other acoustic indices from the sound exposure level. The prediction is based on the angular source energy distribution of the muzzle blast as defined in ISO 17201-1 or calculated using values from ISO 17201-2. This document applies to weapons with calibres of less than 20 mm or explosive charges of less than 50 g TNT equivalent, at distances where peak pressures, including the contribution from projectile sound, are less than 1 kPa (154 dB). NOTE National or other regulations, which could be more stringent, can apply.