Technical resources regarding wfdb files Here are some useful online resources in order to get a clear understanding of the .hea/.dat files format: https://www.physionet.org/physiotools/wag/header-5.htm https://archive.physionet.org/tutorials/creating-records.shtml https://archive.physionet.org/faq.shtml#wfdbdigitalorphysical https://www.physionet.org/physiotools/wag/wag.pdf