声学 - 射击场的噪音 - 第1部分:通过测量确定枪口爆炸

[中文适用范围]： 本文件规定了确定口径小于 20 毫米或炸药小于 50 克 TNT 当量的枪口爆炸声源能量的方法。 它适用于观察到峰值压力小于 1 kPa（相当于峰值声压级 154 dB）的距离。 由该过程确定的源能量、源方向性及其频谱结构可以用作声音传播程序的输入数据，从而能够预测射击场附近的射击噪声。 此外，这些数据还可用于比较不同类型枪支或同一枪支使用的不同类型弹药的声音发射。 本文件适用于民用射击场使用的枪支，但也适用于军用枪支。 不适用于非线性区域听力损伤或声级的评估。 本文件中未考虑抑制器和消音器。 [外文原描述]： This document specifies a method to determine the acoustic source energy of the muzzle blast for calibres of less than 20 mm or explosive charges of less than 50 g TNT equivalent. It is applicable at distances where peak pressures less than 1 kPa (equivalent to a peak sound pressure level of 154 dB) are observed. The source energy, directivity of the source and their spectral structure determined by this procedure can be used as input data to sound propagation programmes, enabling the prediction of shooting noise in the neighbourhood of shooting ranges. Additionally, the data can be used to compare sound emission from different types of guns or different types of ammunition used with the same gun. This document is applicable to guns used in civil shooting ranges but it can also be applied to military guns. It is not applicable to the assessment of hearing damage or sound levels in the non-linear region. Suppressors and silencers are not taken into consideration in this document.