cal_frefeature
于 2021-04-12 发布
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代码说明：
说明： 对信号进行频域特征提取，先通过傅里叶变换得到信号频谱，再计算频谱特征，包括重心频率，均方频率和频率方差(Firstly, the frequency spectrum of the signal is obtained by Fourier transform, and then the spectrum characteristics, including center of gravity frequency, mean square frequency and frequency variance, are calculated.)
文件列表：
cal_frefeature.m, 2545 , 2020-07-20
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