Table 5 Results for the evaluation set using an acoustic model trained with the baseline multi-condition training data set
From: Strategies for distant speech recognitionin reverberant environments
Proc. | LM | Adap. | SimData | RealData | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Room1 | Room2 | Room3 | Ave. | Room1 | Ave. | ||||||||
Near | Far | Near | Far | Near | Far | - | Near | Far | - | ||||
0 - a | Distant | TRI | - | 6.1 | 6.7 | 7.4 | 11.2 | 7.8 | 12.2 | 8.6 | 29.2 | 27.8 | 28.5 |
b | ✓ | 5.6 | 6.5 | 7.2 | 10.2 | 7.5 | 11.3 | 8.0 | 23.9 | 23.3 | 23.6 | ||
c | RNN | - | 5.2 | 6.0 | 5.8 | 9.9 | 6.4 | 9.9 | 7.2 | 26.4 | 26.4 | 26.4 | |
d | ✓ | 4.7 | 5.8 | 6.0 | 9.5 | 6.7 | 10.1 | 7.1 | 21.6 | 22.3 | 22.0 | ||
I - a | WPE (1ch) | TRI | - | 6.2 | 6.4 | 6.9 | 9.9 | 7.0 | 9.5 | 7.7 | 25.4 | 25.0 | 25.2 |
b | ✓ | 5.4 | 5.8 | 6.2 | 9.1 | 6.4 | 8.6 | 6.9 | 20.1 | 20.2 | 20.1 | ||
c | RNN | - | 5.1 | 5.5 | 5.2* | 8.1 | 5.7 | 7.9 | 6.3 | 23.7 | 23.1 | 23.4 | |
d | ✓ | 4.7* | 5.2* | 5.4 | 8.0* | 5.7* | 7.7* | 6.1* | 18.6* | 18.9* | 18.7* | ||
II - a | WPE (2ch) | TRI | - | 6.3 | 6.3 | 6.7 | 8.5 | 6.7 | 8.4 | 7.1 | 23.5 | 22.9 | 23.2 |
b | ✓ | 5.5 | 6.1 | 6.4 | 8.0 | 6.2 | 7.7 | 6.6 | 18.3 | 18.3 | 18.3 | ||
c | RNN | - | 5.1 | 5.4 | 5.4 | 7.0 | 5.7 | 6.8 | 5.9 | 21.4 | 21.6 | 21.5 | |
d | ✓ | 4.7* | 5.1 | 5.4 | 7.0 | 5.9 | 7.3 | 5.9 | 17.7 | 16.9 | 17.3 | ||
III - a | II + MVDR | TRI | - | 6.3 | 6.6 | 6.5 | 7.3 | 6.1 | 7.4 | 6.7 | 21.1 | 20.5 | 20.8 |
b | ✓ | 5.5 | 5.8 | 5.9 | 7.2 | 5.8 | 7.2 | 6.2 | 16.8 | 15.9 | 16.4 | ||
c | RNN | - | 5.8 | 5.6 | 5.1 | 6.2 | 5.0 | 5.8 | 5.6 | 18.9 | 19.0 | 19.0 | |
d | ✓ | 4.8 | 5.0* | 5.0* | 6.3 | 5.3 | 6.3 | 5.4* | 16.3 | 15.2 | 15.7 | ||
IV - a | III + DOL | TRI | - | 6.6 | 6.8 | 6.4 | 7.1 | 5.8 | 7.0 | 6.6 | 20.3 | 18.7 | 19.5 |
b | ✓ | 5.6 | 6.0 | 5.9 | 7.0 | 5.7 | 6.9 | 6.2 | 16.7 | 14.7* | 15.7 | ||
c | RNN | - | 5.7 | 5.5 | 5.0* | 6.1* | 4.8* | 5.7* | 5.5 | 17.9 | 18.2 | 18.1 | |
d | ✓ | 5.0 | 5.0* | 5.0* | 6.2 | 5.1 | 6.2 | 5.4* | 15.3* | 15.7 | 15.5* | ||
V - a | WPE (8ch) | TRI | - | 6.3 | 6.3 | 6.9 | 7.9 | 6.6 | 8.2 | 7.0 | 22.8 | 22.1 | 22.5 |
b | ✓ | 5.6 | 5.9 | 6.4 | 7.3 | 6.0 | 7.6 | 6.5 | 17.4 | 17.1 | 17.2 | ||
c | RNN | - | 5.3 | 5.5 | 5.1 | 6.1 | 5.4 | 6.9 | 5.7 | 21.9 | 20.5 | 21.2 | |
d | ✓ | 4.6* | 4.9* | 5.2 | 6.2 | 5.7 | 6.9 | 5.6 | 15.8 | 15.7 | 15.7 | ||
VI - a | V + MVDR | TRI | - | 7.2 | 7.3 | 6.1 | 6.0 | 6.4 | 7.1 | 6.7 | 15.6 | 15.6 | 15.6 |
b | ✓ | 5.5 | 6.1 | 5.6 | 5.5 | 5.9 | 6.5 | 5.8 | 12.5 | 12.7 | 12.6 | ||
c | RNN | - | 6.2 | 6.3 | 4.8 | 5.3* | 5.2* | 5.7* | 5.6 | 14.2 | 14.5 | 14.3 | |
d | ✓ | 5.1 | 5.1 | 4.6* | 5.3* | 5.3 | 5.8 | 5.2* | 11.1 | 11.1* | 11.1* | ||
VII - a | VI + DOL | TRI | - | 7.7 | 7.6 | 6.7 | 6.7 | 7.1 | 7.2 | 7.2 | 14.5 | 15.7 | 15.1 |
b | ✓ | 5.9 | 6.3 | 5.8 | 5.8 | 6.0 | 6.6 | 6.0 | 12.2 | 13.9 | 13.0 | ||
c | RNN | - | 6.7 | 6.1 | 5.6 | 5.6 | 5.9 | 6.4 | 6.1 | 12.2 | 13.9 | 13.0 | |
d | ✓ | 5.1 | 5.2 | 4.7 | 5.3* | 5.4 | 5.8 | 5.3 | 9.8* | 12.4 | 11.1* | ||