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Block diagram of AHB creation for a single bit. (a) Algorithm that determines the number of beats nHB used in EA procedure and the length of the moving average filter MA. (b) The beat is first averaged with ensemble of all beats from IB that contributed to the nHB count (IB beats (nHB)), and then filtered to obtain AHB. Example signals are shown in b-1 and b-2, where the noise-contaminated heartbeat is given in gray and the filtered signals in blue.
