Table 5 ASR performance (WER) using clean condition training data on the evaluation data
CT | MA | Simulated rooms | Real | Avg. | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Â | Â | Room1A | Room2A | Room3A | Room1 | Â | ||||
| Â | Â | Near | Far | Near | Far | Near | Far | Near | Far | Â |
Single microphone | Â | |||||||||
N | N | 19.0 | 25.6 | 34.5 | 69.8 | 47.1 | 78.3 | 80.2 | 76.6 | 53.9 |
Y | N | 15.6 | 20.7 | 24.2 | 45.3 | 30.9 | 57.5 | 63.1 | 62.4 | 40.0 |
N | Y | 14.1 | 17.9 | 21.3 | 45.1 | 28.3 | 59.5 | 66.4 | 65.9 | 39.8 |
Y | Y | 14.5 | 18.2 | 21.2 | 38.8 | 26.8 | 50.3 | 57.3 | 58.0 | 35.6 |
Two microphones, with MVDR | Â | |||||||||
N | N | 18.0 | 23.3 | 27.7 | 59.8 | 40.1 | 71.2 | 75.1 | 73.7 | 48.6 |
Y | N | 14.5 | 19.0 | 20.6 | 38.8 | 26.6 | 51.0 | 56.5 | 58.6 | 35.7 |
N | Y | 13.5 | 17.0 | 18.9 | 36.8 | 24.5 | 51.4 | 58.8 | 59.3 | 35.0 |
Y | Y | 13.7 | 17.4 | 18.3 | 33.4 | 23.3 | 45.2 | 51.2 | 53.1 | 31.9 |
Eight microphones, with MVDR | Â | |||||||||
N | N | 17.0 | 21.3 | 23.6 | 40.3 | 30.5 | 53.2 | 59.3 | 58.1 | 37.9 |
Y | N | 14.3 | 17.2 | 18.0 | 27.9 | 21.7 | 36.2 | 43.1 | 46.4 | 28.1 |
N | Y | 13.6 | 16.4 | 17.3 | 26.6 | 20.1 | 35.6 | 44.4 | 46.1 | 27.5 |
Y | Y | 13.7 | 16.2 | 15.8 | 24.1 | 19.5 | 32.3 | 38.1 | 42.6 | 25.3 |