ISO 3743-2:2018规定了一种相对简单的工程方法，用于确定小型可移动噪声源的声功率级。本文件中规定的方法适用于在规定频率范围内测量所有类型的噪声，但由ISO 3744和ISO 3745所涵盖的孤立声能爆发组成的脉冲噪声除外。 注:ISO 12001中给出了不同类型噪声的分类。

ISO 3743-2:2018 specifies a relatively simple engineering method for determining the sound power levels of small, movable noise sources. The methods specified in this document are suitable for measurements of all types of noise within a specified frequency range, except impulsive noise consisting of isolated bursts of sound energy which are covered by ISO 3744 and ISO 3745. NOTE A classification of different types of noise is given in ISO 12001.