Table 1 Denoising effect of thresholding algorithms on Doppler signals
From: An improved wavelet threshold denoising approach for surface electromyography signal
Denoising function | Quantitative metrics | |
|---|---|---|
SNR | MSE | |
Hard threshold(sqtwolog) | 22.7494 | 0.00045542 |
Soft threshold(sqtwolog) | 19.4498 | 0.00097359 |
Hard threshold(rigrsure) | 20.8401 | 0.00070689 |
Soft threshold(rigrsure) | 23.6366 | 0.00037128 |
Hard threshold(heursure) | 21.9295 | 0.00055005 |
Soft threshold(heursure) | 23.4166 | 0.00039057 |
Hard threshold(minimaxi) | 21.6546 | 0.000586 |
Soft threshold(minimaxi) | 22.9841 | 0.00043146 |
Garrote threshold | 22.9841 | 0.00043147 |
Improved threshold | 24.4057 | 0.00031102 |