本文件规定了一种方法，用于确定口径小于20 mm或爆炸装药小于50 g TNT当量的炮口爆炸声源能量。它适用于峰值压力小于1 kPa（相当于154 dB的峰值声压级）的距离。由该程序确定的源能量、源方向性及其光谱结构可以用作声音传播程序的输入数据，从而能够预测靶场附近的射击噪声。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发出的声音。 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。它不适用于评估非线性区域的听力损伤或声级。 本文件不考虑抑制器和消音器。

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.