TY - CONF T1 - Smart phone monitoring of second heart sound split T2 - 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society Y1 - 2014 A1 - Thiyagaraja, Shanti A1 - Vempati, Jagannadh A1 - Ram Dantu A1 - Sarma, Tom A1 - Dantu, Siva KW - acoustic signal processing KW - aortic component KW - biomedical equipment KW - Biomedical monitoring KW - cardiac diagnosis KW - cardiology KW - continuous wavelet transform KW - Continuous wavelet transforms KW - discrete wavelet transform KW - discrete wavelet transforms KW - fast Fourier transform KW - fast Fourier transforms KW - frequency domain KW - Heart KW - heart auscultation KW - heartbeat recording KW - medical signal processing KW - Monitoring KW - patient diagnosis KW - patient monitoring KW - pulmonic component KW - second heart sound split KW - smart phone monitoring KW - smart phones KW - stethoscope AB -

Heart Auscultation (listening to heart sounds) is the basic element of cardiac diagnosis. The interpretation of these sounds is a difficult skill to acquire. In this work we have developed an application to detect, monitor, and analyze the split in second heart sound (S2) using a smart phone. The application records the heartbeat using a stethoscope connected to the smart phone. The audio signal is converted into the frequency domain using Fast Fourier Transform to detect the first and second heart sounds (S1 and S2). S2 is extracted and fed into the Discrete Wavelet Transform (DWT) and then to Continuous Wavelet Transform (CWT) to detect the Aortic (A2) and the Pulmonic (P2) components, which are used to calculate the split in S2. With our application, users can continuously monitor their second heart sound irrespective of ages and check for a split in their hearts with a low-cost, easily available equipment.

JF - 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society ER -