Sumarna Sumarna, Agus Purwanto, Dyah Kurniawati Agustika




Electro-acoustic human heartbeat detector have been made with the main parts : (a) stetoscope (piece chest), (b) mic condenser, (c) transistor amplifier, and (d) cues analysis program with MATLAB. The frequency components that contained in heartbeat. cues have also been extracted with Short Time Fourier Transform (STFT) from 9 volunteers. The results of the analysis showed that heart rate appeared in every cue frequency spectrum with their harmony. The steps of the research were including detector instrument design, test and instrument repair, cues heartbeat recording with Sound Forge 10 program and stored in wav file ; cues breaking at the start and the end, and extraction/cues analysis using MATLAB. The MATLAB program included filter (bandpass filter with bandwidth between 0.01 – 110 Hz), cues breaking with hamming window and every part was calculated using Fourier Transform (STFT mechanism) and the result were shown in frequency spectrum graph.


Keywords: frequency components extraction, heartbeat cues, Short Time Fourier Transform


frequency components extraction, heartbeat cues, Short Time Fourier Transform

Full Text:



Aston, R, 1990, Principles of Biomedical Instrumentation and Measurement, Macmillan Publishing Company, New York.

Cherif, L.H., Mostafi, M., Debbal, S.M., 2014, Digital filters in Heart Sound Analysis, International Journal of Clinical Medicine Research, I(3) : 97-108.

Gilat, A., 2011, MATLAB : An Introduction With Applications, John Wiley & Son, Inc., New Jersey.

Kalantar-zadeh, K., 2013, Sensors : An Introductory Course, Springer, New York.

Manolakis, D., Ingle, V., 2011, Applied Digital Signal Processing, Cambridge University Press, New York.

Saritha, B., Tabassum, M., Rajitha, N., Shruthi, M., 2015, Detection of Heart Murmurs Using Phonocardiographic Signals, IJRET, Vol. 04, Issue 04, pp : 547 – 550.

Varanini, M., De Paolis, G., Emdin, M., Macerata, A., Pola, S., Cipriani, M., Marchesi, C., 1997, Spectral Analysis of Cardiovascular Time Series by the S-Transform, IEEE, Computers in Cardiology Vol. 24. pp : 383 – 386.

Webster, J. G. (Editor), 1998, Medical Instrumentation : Applicaton and Design, Third Edition, John Wiley & Son, Inc., New York.

Webster, J. G., 2004, Bioinstrumentation, John Wiley & Son, Inc., New Jersey.

Weeks, M., 2007, Digital Signal Processing Using MATLAB and Wavelets, Infinity Science Press, Hingham, Massachusetts.



  • There are currently no refbacks.

Copyright (c) 2016 Jurnal Sains Dasar

Printed ISSN (p-ISSN): 2085-9872
Online ISSN (e-ISSN): 2443-1273

Indexer :
 Creative Commons License
 Free counters!


View My Stats