liudawei 295451bafd first commmit		2 gadi atpakaļ
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README.md	295451bafd first commmit	2 gadi atpakaļ

FFT 图片说明

README.md

FFT 图片说明

Title：1对应风机编号

图1：原始数据曲线

图2：使用傅里叶变换后将原始数据曲线从时域转换为频域

图3：频域曲线过滤噪声后结果

图4：将滤噪后的曲线转换回时域的结果