Research Article
An Improved Unsupervised Single-Channel Speech Separation Algorithm for Processing Speech Sensor Signals
Table 3
The results of the enhancement methods (SNR, PRSQ, STOI).
| | | Scene | Method | Index | | | | | | | |
| CNMF + JADE | SNR | 13.10 | 9.20 | 11.19 | 8.44 | 7.03 | 8.32 | 5.68 | PESQ | 3.02 | 2.40 | 2.69 | 2.05 | 2.20 | 2.26 | 2.35 | STOI | 0.95 | 0.90 | 0.92 | 0.88 | 0.85 | 0.89 | 0.74 |
| CNMF + JADE+ spectral subtraction | SNR | 5.22 | 5.36 | 6.16 | 4.76 | 4.07 | 4.76 | 3.55 | PESQ | 1.97 | 1.95 | 1.70 | 1.89 | 1.88 | 1.89 | 1.27 | STOI | 0.79 | 0.82 | 0.70 | 0.79 | 0.72 | 0.80 | 0.75 |
| CNMF + JADE+ Wiener filtering | SNR | -2.24 | -2.04 | -1.02 | -1.96 | -2.13 | -1.96 | -1.62 | PESQ | 2.36 | 2.33 | 2.96 | 2.13 | 2.19 | 2.13 | 2.49 | STOI | 0.73 | 0.77 | 0.72 | 0.72 | 0.69 | 0.72 | 0.72 |
| CNMF + JADE+ Kalman filtering | SNR | 3.27 | 3.42 | 3.19 | 3.05 | 2.84 | 4.0 | 2.05 | PESQ | 2.03 | 2.25 | 2.05 | 2.00 | 1.97 | 2.00 | 2.04 | STOI | 0.83 | 0.88 | 0.69 | 0.82 | 0.78 | 0.83 | 0.57 |
| CNMF + JADE+ wavelet transform | SNR | 12.02 | 11.10 | 15.9 | 8.35 | 7.23 | 8.37 | 7.40 | PESQ | 2.49 | 2.46 | 1.96 | 1.70 | 2.25 | 2.15 | 1.90 | STOI | 0.82 | 0.92 | 0.81 | 0.84 | 0.88 | 0.91 | 0.76 |
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