This is a crude attempt at quasi-realtime signal processing using the PC sound card as an analogue data acquisition device. The cardiogram signal is generated by a Polar heart rate monitor strap and transmitted wirelessly to a receiver connect to the PC microphone. See here for the physical setup:
The Matlab script is based on Rodney Thomson's SoundcardSpectralAnalysis m.file which utilizes the audiorecorder function.
Nagi Hatoum (2021). Real Time Heart Rate Monitor (https://www.mathworks.com/matlabcentral/fileexchange/28282-real-time-heart-rate-monitor), MATLAB Central File Exchange. Retrieved .
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