Analysis of the Effectiveness of Using Digital Filters in Electronic Stethoscopes

The heart sound produced in some cases of the disease shows a certain pattern. purpose this study was to design an electronic stethoscope for cardiac auscultation with following display. contribution is being able show patterns that can be diagnosed signal. So pattern known when there disorder, will made next display, making it easier users diagnose disease. obtained from mechanical activity which tapped by condenser mic. held pre-amp circuit, then filters used are High Pass Filters and Low interrupted frequency 20-95 Hz. output filter circuit enter booster circuit. Then processed microcontroller. In processing data displayed on Nextion Speaker, author uses Arduino Mega. Based test, seen digital has slight error rate because removes most noise, while analog still lot noise. results research been done implemented using system really supports needs.