Abstracts This research is intended to capture the audio channel 3 using a heart monitor sound signals the heart and ECG signals, 4-channel, which has electronic control to detect and display a heart sound with a microphone, then send a signal that has come with the expansion cycle signal amplifier (Amplifier) to amplify, and then selecting the frequency range with the wongchonkrong low frequency (Low pass filter), and then remove the signal display and analysis in a computer system by using MATLAB-display using the Graphical User Interface request.Program is connected to an audio signal at the heart of a volunteer. This study will collect information volunteer for 50 people, and then to bring the signal to display and analyze. The final step is a database, which can be useful in diagnosing the diseases related to disorders of the heart per.
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