The mechanism of noise generation of fan for center air-conditioner is analyzed. A few measures of noise reducing is introduced. Good result is obtained in practical use.
分析了中央空调组合机组内离心通风机噪声产生的机理。介绍了几种降噪措施。实际应用中取得良好效果。
This paper analyzes the mechanism of noise generation, and indicates that the source of noise generated from a resonating saw blade is the key source for the noise generation.
分析了圆锯片噪声产生的机理，同时指出共振噪声是圆锯片噪声的重要组成部分。
Thirdly, the paper has discussed the generation mechanism, acoustic model and the simulation model of the road noise on the basis of the tire pattern noise, and carried out the simulation analysis.
再次，在对轮胎花纹噪声研究的基础上，探讨了道路噪声的发声机理、 发声模型及其仿真模型，并进行了仿真实验分析。
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