Sparse Signal Representations of Bearing Fault Signals for Exhibiting Bearing Fault Features

<div>Frequency spectra: (a) the frequency spectrum of the mixed signal; (b) the frequency spectrum of the optimal complex Morlet wavelet; and (c) the frequency spectrum of the signal filtered by the optimal complex Morlet wavelet transform.</div>

Shock and Vibration

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Figure 4

Figure 4: Sparse Signal Representations of Bearing Fault Signals for Exhibiting Bearing Fault Features 