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Denoise and segmentation of the second heart sound using matching pursuit

Hedayioglu, F. ; Jafari, M. G. ; Mattos, S. S. ; Plumbley, M. D. ; Coimbra, M.

Denoise and segmentation of the second heart sound using matching pursuit, Proc Portuguese Conf. on Pattern Recognition - RecPad, Coimbra, Portugal, Vol. 2012, pp. x - x, October, 2012.

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Abstract
We propose a denoising and segmentation technique for the second heart
sound (S2). To denoise, Matching Pursuit (MP) was applied using a set of
non-linear chirp signals as atoms. We show that the proposed method can
be used to segment the phonocardiogram of the second heart sound into
its two clinically meaningful components: the aortic (A2) and pulmonary
(P2) components.