标准摘要
[中文适用范围]： 指定测量垂直于测量表面的声强分量的方法，选择该测量表面是为了封闭要确定其声功率级的噪声源。 根据测量值计算一倍频程、三分之一倍频程或频带限制加权声功率级。 该方法适用于原位或专用测试环境中的任何源，只要可以为其定义物理静止测量表面，并且源产生的噪声在时间上是静止的。 [外文原描述]： Specifies a method for measuring the component of sound intensity normal to a measurement surface which is chosen so as to enclose the noise source(s) of which the sound power level is to be determined. The one-octave, one-third-octave or band-limited weighted sound power level is calculated from the measured value. The method is applicable in situ or in special purpose test environments to any source for which a physically stationary measurement surface can be defined, and on which the noise generated by the source is stationary in time.
英文名称Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points