Figure 2

Results of processing of notch filters H _i ( z ) . (a) Clinical ECG with 50 Hz real PLI; (b) The output of this kind filter when applied to the signal in (a); (c) Differentiated components of (a) and (b); (d) Clinical ECG without PLI; (e) The output of the signal in (d) after passing it to this kind filter; (f) Differentiated components of (d) and (e); (g) A simulated unit impulse signal (1 mV); (h) The output of H _i (z) when applied to the signal in (g); (i) Differentiated results of (g) and (h); (j) The distributions of ${\sigma }_v^2$ at various SBW; (k) The distributions of duration of RAs at various SBW.