在实验室环境研究轴流式通风机噪声的主动控制问题。
The initiative control of the noise producing by axial flow ventilator is investigated in experiment environment.
通风机空气动力噪声强度大是通风机噪声的主要部分，且不易控制。
The aerodynamic noise strength of the centrifugal blower is bigger, and it is the main block in the centrifugal blower noise, and don't easy to control.
该文介绍了声强法的原理和通风机噪声的声强测量方法，有一定实际应用价值。
This paper introduces the principles of sound intensity method and the application of the method to measure the noise of the fan.
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