冰箱噪声的声强测试与噪声源分析

Sound intensity testing and noise analyzing of refrigerator

介绍声强技术的原理和一个实际工程应用实例。实例运用声强法对一台冰箱进行声强测试,并通过声强分析软件对测试到的数据进行分析,得到冰箱背面的声强分布图,通过这些数据对冰箱的噪声源进行分析和识别,确定该冰箱的噪声源和各个频率噪声的贡献值,为以后的降噪研究提供依据。

This paper introduces the principle of sound intensity technique and focuses on an actual application case. In the case, the sound intensity of a refrigerator is measured. The data got from the measurement is analyzed by using sound intensity analysis software, getting a sound intensity distribution curve about the back of the refrigerator. According to the analysis result, the paper identifies the noise source of the fridge and the contribution value of noise with different frequency, providing a basis for the later research of noise reduction.