Software Development for the Analysis of Heartbeat Sounds with LabVIEW in Diagnosis of Cardiovascular Disease |
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Authors: | Taner Topal Hüseyin Polat ?nan Güler |
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Institution: | (1) Electronics and Computer Education Department, Faculty of Technical Education, Gazi University, Ankara, Teknikokullar, 06500, Turkey |
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Abstract: | In this paper, a time-frequency spectral analysis software (Heart Sound Analyzer) for the computer-aided analysis of cardiac
sounds has been developed with LabVIEW. Software modules reveal important information for cardiovascular disorders, it can
also assist to general physicians to come up with more accurate and reliable diagnosis at early stages. Heart sound analyzer
(HSA) software can overcome the deficiency of expert doctors and help them in rural as well as urban clinics and hospitals.
HSA has two main blocks: data acquisition and pre-processing, time–frequency spectral analyses. The heart sounds are first
acquired using a modified stethoscope which has an electret microphone in it. Then, the signals are analysed using the time–frequency/scale
spectral analysis techniques such as STFT, Wigner–Ville distribution and wavelet transforms. HSA modules have been tested
with real heart sounds from 35 volunteers and proved to be quite efficient and robust while dealing with a large variety of
pathological conditions. |
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Keywords: | Phonocardiogram signal Cardiac sound analysis FFT STFT Wigner– Ville distribution Wavelet transform |
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