SIS SS-ISO 3747-1989 声学． 噪声源声功率级测定．使用参考声源的测量方法

标准号：SIS SS-ISO 3747-1989
中文标准名称：声学． 噪声源声功率级测定．使用参考声源的测量方法
英文标准名称：Acoustics — Determination ofsoundpower levels ofnoise sources — Survey method using a reference sound source
发布日期：1989/12/6 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This International Standard specifies a survey method for measuring the sound pressure levels produced at specified measurement points by the noise source under test and by a reference sound source.The sound power level of the source under test is calculated from the measured values of the sound pressure level by using environmental corrections. These environmental corrections are calculated from the differences between the values ob-tained with a reference sound source and those given by its calibration.Different microphone arrays and different positions for the reference sound source are given for different acoustical situations, depending on the size of the source under test as well as the size, number and orientation of the reflecting planes which are situated in proximity to the source under test.The positions of the reference sound source also depend on whether it is possible to place the reference sound source on the uppermost outer surface of the source under test.