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Vol.1 , No. 3, Publication Date: Aug. 26, 2014, Page: 97-108
 filters take the advantage of being more useful in filtering PCG signal including the separation of heart sounds (S1 and S2), heart murmurs and clicks. They still seem more likely to be used if we want to conduct filtering murmurs without too distorted S1 and S2 sounds because they always have the smaller error. The FIR (finite Impulse Response) filters represented by the frequency sampling technique affects the morphology of internal components much more, and this is confirmed by a larger error between the original signal and the synthesized signal.&picture=http://www.aascit.org/aascit/decorators/img/journal/906.jpg)
| [1] | L. Hamza Cherif, Genie -Biomedical Laboratory (GBM), Department of genie electric and electronic, Faculty of technology, university Aboubekr Belkaid Tlemcen, Algeria. |
| [2] | M. Mostafi, Genie -Biomedical Laboratory (GBM), Department of genie electric and electronic, Faculty of technology, university Aboubekr Belkaid Tlemcen, Algeria. |
| [3] | S. M. Debbal, Genie -Biomedical Laboratory (GBM), Department of genie electric and electronic, Faculty of technology, university Aboubekr Belkaid Tlemcen, Algeria. |
Valvular pathologies introduce significant changes in the morphology of the phonocardiogram signal. Heart murmurs are often the first signs of these changes, and are usually found during auscultation in primary health care. Eliminate those breaths to isolate normal heart sounds gives considerable diagnostic support term. This article highlights the importance of the choice of digital filter in the phonocardiogram signal analysis. Indeed, on the basis of the results that IIR (Infinite Impulse Response) filters take the advantage of being more useful in filtering PCG signal including the separation of heart sounds (S1 and S2), heart murmurs and clicks. They still seem more likely to be used if we want to conduct filtering murmurs without too distorted S1 and S2 sounds because they always have the smaller error. The FIR (finite Impulse Response) filters represented by the frequency sampling technique affects the morphology of internal components much more, and this is confirmed by a larger error between the original signal and the synthesized signal.
Keywords
Digital Phonocardiography, IIR and FIR Filters, Frequency Content, Synthesis Error, Power Spectral Density
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