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Fig. 7 | BioMedical Engineering OnLine

Fig. 7

From: An automatic segmentation method for heart sounds

Fig. 7

Murmur elimination effect for heart sound containing S4 and systolic murmurs using the three methods. a Is the non-murmur-reduced heart sound, and bd show the sounds filtered by ALPF, WT and 200-LPF, respectively. In the calculation of \(SMR, U = U1 + U2 + \cdot\cdot\cdot + U6\), and \(V = V1 + V2 + V3\)

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