Denoising and segmentation of the second heart sound using matching pursuit

Author

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

Author_Institution

Dept. of Comput. Sci., Univ. do Porto, Porto, Portugal

fYear

2012

fDate

Aug. 28 2012-Sept. 1 2012

Firstpage

3440

Lastpage

3443

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.

Keywords

acoustic signal processing; blood vessels; medical signal processing; phonocardiography; signal denoising; time-frequency analysis; aortic component; matching pursuit; nonlinear chirp signals; phonocardiogram; pulmonary component; second heart sound signal denoising; second heart sound signal segmentation; Approximation algorithms; Approximation methods; Chirp; Dictionaries; Heart; Matching pursuit algorithms; Time frequency analysis; Heart Auscultation; Heart Sounds; Humans; Signal Processing, Computer-Assisted;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2012 Annual International Conference of the IEEE

Conference_Location

San Diego, CA

ISSN

1557-170X

Print_ISBN

978-1-4244-4119-8

Electronic_ISBN

1557-170X

Type

conf

DOI

10.1109/EMBC.2012.6346705

Filename

6346705