Table 18 Experimental results on the real reverberant data by using NN training data ‘5s.20u’ (combined)
Method | Frame selection | Acoustic model | Digit accuracy (%) | ||||
|---|---|---|---|---|---|---|---|
InCar | Lounge | MeetR | Office | Average | |||
LMCN + Proposed (24 NNs) | Linear 8-1-0 | Clean | 69.4 | 38.5 | 78.9 | 75.3 | 65.6 |
Clean-rt | 85.9 | 60.9 | 90.3 | 93.7 | 82.7 | ||
Multi-rt | 82.4 | 85.1 | 90.9 | 86.0 | 86.1 | ||
Clean+multi-rt | 89.6 | 91.0 | 94.4 | 93.5 | 92.1 | ||
Linear 16-1-0 | Clean | 67.8 | 35.1 | 79.4 | 78.0 | 65.1 | |
Clean-rt | 85.7 | 58.8 | 90.7 | 94.7 | 82.5 | ||
Multi-rt | 82.6 | 84.2 | 90.2 | 89.3 | 86.6 | ||
Clean+multi-rt | 89.2 | 90.9 | 94.4 | 93.5 | 92.0 | ||
Linear 32-1-0 | Clean | 67.0 | 30.0 | 74.6 | 77.6 | 62.3 | |
Clean-rt | 84.7 | 53.0 | 89.2 | 94.1 | 80.3 | ||
Multi-rt | 78.4 | 82.0 | 88.4 | 87.9 | 84.2 | ||
Clean+multi-rt | 86.5 | 89.2 | 93.1 | 92.0 | 90.2 | ||
Skip1 8-1-0 | Clean | 69.1 | 38.0 | 78.4 | 75.6 | 65.3 | |
Clean-rt | 85.3 | 61.3 | 90.9 | 93.5 | 82.8 | ||
Multi-rt | 81.0 | 82.5 | 91.2 | 84.2 | 84.7 | ||
Clean+multi-rt | 89.2 | 90.7 | 95.1 | 93.4 | 92.1 | ||
Skip1 16-1-0 | Clean | 67.2 | 34.7 | 75.8 | 77.6 | 63.8 | |
Clean-rt | 85.2 | 58.5 | 89.6 | 93.6 | 81.7 | ||
Multi-rt | 83.2 | 84.8 | 91.5 | 87.1 | 86.6 | ||
Clean+multi-rt | 90.0 | 92.9 | 95.5 | 94.3 | 93.2 | ||