Table 4 WER [%] on the REVERB challenge dev set using eight-channel data and MFCC features

CSP+BF+derev.

MFCC

ML

10.79

12.19

11.02

16.71

11.47

20.43

13.77

40.36

42.83

41.60

+NLMS

11.11

12.27

11.81

17.40

12.34

21.46

14.40

38.37

40.74

39.56

GMM

+LDA+MLLT

ML

8.38

10.30

9.91

14.94

10.19

17.28

11.83

34.06

37.18

35.62

+basis fMLLR

7.74

9.22

8.80

13.33

9.05

15.28

10.57

27.39

30.14

28.77

bMMI

6.64

8.21

7.25

11.39

7.10

11.50

8.68

24.89

27.96

26.43

f-bMMI

6.19

7.40

7.39

10.13

6.58

10.24

7.99

22.58

26.25

24.42

f-bMMI _c

6.39

7.33

7.44

9.86

6.70

10.44

8.03

22.71

27.41

25.06

+SAT

ML

7.25

9.32

8.70

12.79

8.33

13.80

10.03

28.88

32.88

30.88

bMMI

5.24

7.10

6.56

9.93

5.98

10.98

7.63

26.58

30.83

28.71

f-bMMI

5.01

6.76

5.96

9.07

5.84

9.40

7.01

24.27

29.60

26.94

f-bMMI _c

5.16

6.93

6.11

9.49

5.96

9.67

7.22

24.27

29.73

27.00

SGMM

ML

5.65

7.62

7.47

10.97

7.00

11.45

8.36

25.27

30.35

27.81

bMMI

4.57

6.05

6.19

9.27

6.01

9.89

7.00

24.70

30.01

27.36

bMMI _c

4.72

6.10

6.09

9.56

6.18

10.01

7.11

24.39

30.01

27.20

DNN

CE

6.49

7.45

7.84

11.44

7.25

11.97

8.74

25.27

29.32

27.30

bMMI

5.56

6.27

6.24

9.29

5.71

10.44

7.25

23.27

28.84

26.06

bMMI _c

5.26

6.05

6.21

9.10

5.61

10.06

7.05

22.65

28.50

25.58