GB/T 16538-2008 in English

《GB/T 16538-2008声学 声压法测定噪声源声功率级 现场比较法》由TC17（全国声学标准化技术委员会）归口，主管部门为中国科学院。
本标准规定了声源，特别是非移动声源的声功率级现场测定方法。本标准能够用于所有实验室测量法要求环境之外的各种测试环境，只要该环境的背景噪声足够低和传声器位置处的声压级主要依赖于房间表面的反射。本标准主要适用于辐射噪声是宽频带的噪声源。同时它也可用于辐射窄带或离散纯音的噪声源，但测量不确定度可能会比本标准给出的要大。

Scope

This standard specifies the on-site measurement method for the sound power level of sound sources, especially non-moving sound sources. This standard uses the comparative method, and all measurements use octave bands. This standard can be used in various test environments other than those required by all laboratory measurement methods, as long as the background noise of the environment is sufficiently low and the sound pressure level at the position of the microphone depends mainly on the reflection of the room surface. This standard is mainly applicable to noise sources where radiated noise is a broadband noise source. It is also applicable to noise sources that radiate narrowband or discrete pure tones, but the measurement uncertainty may be larger than that given in this standard.