A joint resonance frequency estimation and in-band noise reduction method for enhancing the detectability of bearing fault signals

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Wavelets for fault diagnosis of rotary machines: A review with applications (2014, methodology): “A new denoising scheme that combines resonance frequency estimation with in-band noise reduction was also proposed for enhancing detectability of bearing fault signals [39], where Gabor wavelet was used for wavelet filtering, and a smoothness index defined as the ratio of the geometric mean to the”