Table 2 Performance of noise reduction techniques evaluated using spot efficiency (%)
Noise type | Noise reduction technique | Noise intensity (dB) | ||||||
|---|---|---|---|---|---|---|---|---|
| Â | Â | 20 | 18 | 16 | 14 | 12 | 10 | 8 |
Gaussian | WT | 90.36 | 90.71 | 89.29 | 89.29 | 88.93 | 85.00 | 67.50 |
| Â | GNDF | 88.57 | 88.21 | 89.64 | 88.57 | 84.29 | 85.36 | 77.86 |
Rayleigh | WT | 90.00 | 90.36 | 90.71 | 89.64 | 89.29 | 87.14 | 90.00 |
| Â | GNDF | 90.71 | 88.93 | 89.29 | 87.86 | 88.21 | 86.43 | 87.14 |
Exponential | WT | 91.07 | 91.43 | 90.71 | 90.36 | 89.29 | 84.29 | 82.86 |
| Â | GNDF | 90.71 | 89.64 | 89.29 | 90.71 | 88.57 | 87.86 | 82.87 |