Performance comparison of wavelet domain denoising of ECG signal. The output SNR values are averaged over 100 noise realizations.
| Input | Output SNR (dB) | ||||||
|---|---|---|---|---|---|---|---|
| SNR (dB) | SURE-LET | SS | SURE-SUB | ST | MPE | MPE-SUB | ITER- ℓ1 |
| –5.00 | 3.61 | 4.29 | 4.50 | 2.34 | 3.32 | 4.55 | –0.09 |
| –2.50 | 6.15 | 6.80 | 6.99 | 3.63 | 5.83 | 7.06 | 2.41 |
| 0 | 8.54 | 9.19 | 9.40 | 5.08 | 8.29 | 9.47 | 4.88 |
| 2.50 | 10.96 | 11.60 | 11.79 | 6.68 | 10.67 | 11.85 | 7.35 |
| 5.00 | 13.31 | 13.96 | 14.09 | 8.34 | 13.06 | 14.17 | 9.83 |
| 7.50 | 15.61 | 16.22 | 16.34 | 10.06 | 15.33 | 16.38 | 12.25 |
| 10.00 | 17.70 | 18.29 | 18.23 | 11.79 | 17.42 | 18.28 | 14.68 |
| 12.50 | 19.66 | 20.25 | 20.04 | 13.56 | 19.39 | 19.98 | 17.00 |
| 15.00 | 21.38 | 21.97 | 21.04 | 15.18 | 21.13 | 21.34 | 19.28 |
| 17.50 | 22.78 | 23.43 | 22.88 | 16.79 | 22.57 | 22.44 | 21.38 |
| 20.00 | 23.90 | 24.65 | 24.05 | 18.17 | 23.69 | 23.46 | 23.26 |
| Input | Output SNR (dB) | ||||||
|---|---|---|---|---|---|---|---|
| SNR (dB) | SURE-LET | SS | SURE-SUB | ST | MPE | MPE-SUB | ITER- |
| –5.00 | 3.61 | 4.29 | 4.50 | 2.34 | 3.32 | –0.09 | |
| –2.50 | 6.15 | 6.80 | 6.99 | 3.63 | 5.83 | 2.41 | |
| 0 | 8.54 | 9.19 | 9.40 | 5.08 | 8.29 | 4.88 | |
| 2.50 | 10.96 | 11.60 | 11.79 | 6.68 | 10.67 | 7.35 | |
| 5.00 | 13.31 | 13.96 | 14.09 | 8.34 | 13.06 | 9.83 | |
| 7.50 | 15.61 | 16.22 | 16.34 | 10.06 | 15.33 | 12.25 | |
| 10.00 | 17.70 | 18.23 | 11.79 | 17.42 | 18.28 | 14.68 | |
| 12.50 | 19.66 | 20.04 | 13.56 | 19.39 | 19.98 | 17.00 | |
| 15.00 | 21.38 | 21.04 | 15.18 | 21.13 | 21.34 | 19.28 | |
| 17.50 | 22.78 | 22.88 | 16.79 | 22.57 | 22.44 | 21.38 | |
| 20.00 | 23.90 | 24.05 | 18.17 | 23.69 | 23.46 | 23.26 | |
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