Stability and Phase Response Analysis of Optimum Reduced-Order IIR Filter Designs for ECG R-Peak Detection

Figure 2

Comparison of the magnitude response of the three filter methodologies: (a) the Pan–Tompkins 32-order FIR filter. (b) the 60-order FIR filter from base code. (c) Our proposed IIR filter with band-pass to band-stop combination.

(a)

(b)

(c)