Hi, I implemented a circuit which shows up heart beats using the electret microphone on the Oscilloscope, My point is that I want to show the heart beat using labview which i can do but I want to calculate the number of beats per minute, is there anyone who can help me out in this issue. Brian
hi.., is this thread still active? I have same issue. I 've connected my microphone and labview acquire the sound from the mcirophone jack on my soundcard.. But firstly my vi's that i designed, is for recorded heart signal. The sound that i record comes from stethoscope that connect with electret microphone. Vi's can count the peak. but i cant count them as bpm. Is there anybody can solve my problem?