声学.噪声源声功率级的测定.基本标准的使用指南

[中文适用范围]： 本文件提供了一组 12 个基本国际标准（见表 1、2 和 3）的使用指南，这些标准描述了确定所有类型的机械、设备和产品的声功率级的各种方法。 它提供了有关选择一个或多个这些标准的指导，这些标准适用于任何特定类型的声源、测量环境和所需的精度。 给出的指导适用于空气传播的声音。 它用于准备噪声测试规范（参见噪声测试规范可以推荐特定基本国际标准的应用，并给出被测机器所属特定系列的安装和操作条件的详细要求，符合基本标准中给出的一般原则。 本文件无意取代所引用的基本国际标准中的各个测试方法的任何细节，或添加任何附加要求。 注 1：两个相互补充的数量可以用于描述机械、设备和产品的噪声排放，一是规定位置处的排放声压级，二是声功率级。 描述测定工作时排放声压级基本方法的国际标准站和其他指定位置的声能级符合 ISO 11200 至 ISO 11205（参考文献 [20] 至 [25]）。 注 2：本文件未涉及 ISO 3741 至 ISO 3747 中提到的声能级，因为任何法律中均未提及。 要求。 其应用仅限于 ISO 12001 中定义的单次声能爆发或瞬态声音的非常特殊情况。 [外文原描述]： ISO 3740:2019 gives guidance for the use of a set of twelve basic International Standards (see Tables 1, 2 and 3) describing various methods for determining sound power levels from all types of machinery, equipment and products. It provides guidance on the selection of one or more of these standards, appropriate to any particular type of sound source, measurement environment and desired accuracy. The guidance given applies to airborne sound. It is for use in the preparation of noise test codes (see ISO 12001) and also in noise emission testing where no specific noise test code exists. Such standardized noise test codes can recommend the application of particular basic International Standard(s) and give detailed requirements on mounting and operating conditions for a particular family to which the machine under test belongs, in accordance with general principles given in the basic standards. ISO 3740:2019 is not intended to replace any of the details of, or add any additional requirements to, the individual test methods in the basic International Standards referenced. NOTE 1 Two quantities which complement each other can be used to describe the noise emission of machinery, equipment and products. One is the emission sound pressure level at a specified position and the other is the sound power level. The International Standards which describe the basic methods for determining emission sound pressure levels at work stations and at other specified positions are ISO 11200 to ISO 11205 (References [20] to [25]). NOTE 2 The sound energy level mentioned in ISO 3741 to ISO 3747 is not addressed in this document as it is not mentioned in any legal requirement. Its application is limited to very special cases of a single burst of sound energy or transient sound defined in ISO 12001.