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

Figure 7

The wavelet transform analysis of an in-line inspected signal with various mother wavelets: (a) Daubechies 10, (b) Haar, (c) Symlet 10, (d) Shannon 1.0–0.5, (e) Biorthogonal 3.1, (f) Biorthogonal 3.9, (g) Morlet, and (h) Gaussian 8.

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