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faultysignal_with_noise
- 1. 构造含噪音的振动信号 faultysignal_with_noise, 2. 利用小波变换 Wavelet transform去噪,小波包 Wavelet packet transform 变换去噪, 3. 把两种去噪后的信号,分别用STFT ,FFT ,小波变换三种方法进行错误诊断(1. the vibration signal faultysignal_with_noise, which contains noise, is constructed. 2. using wavelet