Applications of an Improved Time-Frequency Filtering Algorithm to Signal Reconstruction

Figure 9

Time-frequency representations of the machine fault signals in DE under SαS distribution noise environment. (a) Time-frequency representation of the machine fault signals in DE employing the STFT-TFR method. (b) Time-frequency representation of the machine fault signals in DE employing the FLOSTFT-TFR method. (c) The machine fault signals in DE restored by the STFT-TFF method. (d) The fault signals in DE reconstructed by the FLOSTFT-TFF method.

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