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Figure 3 | SpringerPlus

Figure 3

From: An automated tool for localization of heart sound components S1, S2, S3 and S4 in pulmonary sounds using Hilbert transform and Heron’s formula

Figure 3

Localization results of S1, S2 and S3 HS components. (a) A high flow simulated mixed signal of heart and lung sounds. (b) Heart sound consists of S1, S2 and S3 components. (c) Output of HHA method (black curve corresponding to mixed sound data and red curve for heart sound region) and (d) depict the output of SSA method (black curve corresponding to mixed sound and red curve for heart sound segment).

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