Table 1 Comparison of MOS results (with 95% confidence interval)
From: Integrated acoustic echo and background noise suppression technique based on soft decision
Environments | MOS | |||
|---|---|---|---|---|
Noise | SNR (dB) | IS-127+Turbin et al. | Gustafsson et al. | Proposed |
White | 5 | 1.10 ± 0.14 | 1.35 ± 0.23 | 1.50 ± 0.36 |
|  | 10 | 1.45 ± 0.24 | 1.90 ± 0.40 | 2.40 ± 0.47 |
|  | 15 | 1.95 ± 0.39 | 2.70 ± 0.38 | 2.75 ± 0.43 |
|  | 20 | 1.85 ± 0.38 | 2.80 ± 0.39 | 3.10 ± 0.50 |
Babble | 5 | 1.20 ± 0.24 | 1.15 ± 0.17 | 1.35 ± 0.27 |
|  | 10 | 1.40 ± 0.24 | 1.45 ± 0.28 | 1.50 ± 0.24 |
|  | 15 | 1.55 ± 0.24 | 2.10 ± 0.30 | 2.10 ± 0.30 |
|  | 20 | 2.25 ± 0.30 | 2.40 ± 0.28 | 2.45 ± 0.24 |
Vehicle | 5 | 2.15 ± 0.31 | 3.10 ± 0.40 | 3.25 ± 0.48 |
|  | 10 | 2.25 ± 0.21 | 3.20 ± 0.24 | 3.40 ± 0.35 |
|  | 15 | 2.35 ± 0.27 | 3.20 ± 0.24 | 3.25 ± 0.30 |
|  | 20 | 2.45 ± 0.36 | 3.40 ± 0.38 | 3.50 ± 0.39 |