标准摘要
[中文适用范围]： 本文件规定了通过使用声强测量在包围声源的测量表面上测量声功率的方法。本文件提供了关于声学环境、环境噪声、测量表面和测量次数的指南。安装类别通常设计为代表根据ISO 5801、ISO 13350安装的风扇的物理方向，并在ISO 13349-1中定义。 本文件适用于ISO 5801和ISO 13349-1中定义的风扇。本文件仅限于确定指定安装类别的空气传播声发射。不测量振动，也不确定空气传播声发射对振动效应的敏感性。 根据本文件可以测试的风扇尺寸仅受测试装置的实际方面的限制。 [外文原描述]： This document specifies a method to measure sound power by using sound intensity measurements on a measurement surface which encloses the sound source. This document provides guidelines on the acoustical environment, ambient noise, measurement surface, and number of measurements. The installation categories are generally designed to represent the physical orientation of a fan installed in accordance with ISO 5801, ISO 13350 and also defined in ISO 13349-1. This document is applicable to fans defined in ISO 5801 and ISO 13349-1. This document is limited to the determination of airborne sound emission for the specified installation categories. Vibration is not measured, nor is the sensitivity of airborne sound emission to vibration effects determined. The sizes of the fan, which can be tested in accordance with this document are limited only by the practical aspects of the test installations.
英文名称Fans — Determination of fan sound power levels under standardized laboratory conditions — Part 4: Sound intensity method