A Comparative Analysis of Methods for Evaluation of ECG Signal Quality after Compression

Figure 2

Comparison between PRD and three variants of PRDN. Comparison between PRD and three variants of PRDN tested on signals with DC (black), with DC and offset 1 and 2 (green and cyan, respectively), and with subtracted DC (red). In both types of signals—with DC and offset 1 and 2—the DC component is preserved and offset of 1,024 is added; the difference is in algorithms PRDN2 and PRDN3 where different values of offset P are subtracted (1,024 and 2,048, respectively).

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