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Table 6 Word accuracy for LVCSR (%)

From: Dereverberation and denoising based on generalized spectral subtraction by multi-channel LMS algorithm using a small-scale microphone array

Distorted speech #

CMN only

Power SS

GSS (proposed)

  

w/o MFT

MFT

w/o MFT

MFT

2

44.35

63.34

65.15

65.95

66.47

4

27.59

40.79

44.03

49.16

47.56

5

25.61

42.55

45.75

49.29

48.31

11

73.90

79.26

78.17

80.77

80.96

12

27.06

42.28

44.91

45.38

47.83

13

29.62

50.78

54.60

56.13

58.87

15

65.24

71.67

68.31

74.35

75.93

Ave.

41.91

55.81

57.27

60.15

60.85

  1. Delay-and-sum beamforming was performed for all methods