GB/T 3768-2017
声学 声压法测定噪声源声功率级和声能量级 采用反射面上方包络测量面的简易法
Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Survey method using an enveloping measurement surface over a reflecting plane
GBT3768-2017, GB3768-2017