Table 2 Test results to compare the SNR before and after filtering
From: Implementation of a portable device for real-time ECG signal analysis
Clean signal from | Type of | SNR before | SNR after | SNR |
|---|---|---|---|---|
MIT-BIH Arrhythmia DB | noise | filtering (dB) | filtering (dB) | improvement (dB) |
Record 118 | BW | 6 | 15.1689 | 9.1689 |
Record 118 | EM | 6 | 13.7682 | 7.7682 |
Record 118 | MA | 6 | 14.4875 | 8.4875 |
Record 118 | BW | 10 | 18.5482 | 8.5482 |
Record 118 | EM | 10 | 15.7853 | 5.7853 |
Record 118 | MA | 10 | 17.5477 | 7.5477 |
Record 118 | BW | 14 | 19.4872 | 5.4872 |
Record 118 | EM | 14 | 17.5643 | 3.5643 |
Record 118 | MA | 14 | 18.6872 | 4.6872 |
Record 119 | BW | 6 | 14.2548 | 8.2548 |
Record 119 | EM | 6 | 12.2346 | 6.2346 |
Record 119 | MA | 6 | 13.7458 | 7.7458 |
Record 119 | BW | 10 | 17.9658 | 7.9658 |
Record 119 | EM | 10 | 16.4867 | 6.4867 |
Record 119 | MA | 10 | 17.1054 | 7.1054 |
Record 119 | BW | 14 | 18.7548 | 4.7548 |
Record 119 | EM | 14 | 15.6875 | 1.6875 |
Record 119 | MA | 14 | 17.6561 | 3.6561 |
Average | Â | 10 | 16.3853 | 6.3853 |