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Revisiting QRS Detection Methodologies for Portable, Wearable, Battery-Operated, and Wireless ECG Systems

Figure 3

Filter bank schematic.

A filter bank contains a set of analysis filters that decompose the input signal into sub-bands with uniform bandwidths in order to extract ECG features. Here, is a downsampling process producing down-sampled signals .

Figure 3

doi: https://doi.org/10.1371/journal.pone.0084018.g003