In-Line Acoustic Device Inspection of Leakage in Water Distribution Pipes Based on Wavelet and Neural Network

<div>FFT analysis of a recorded in-line inspected acoustic signal. (a) Acoustic signal frequency band. (b) Leakage signal frequency band. (c) Background noise frequency band.</div>

Journal of Sensors

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Figure 5

Figure 5: In-Line Acoustic Device Inspection of Leakage in Water Distribution Pipes Based on Wavelet and Neural Network 