Table 3 PESQ values for the W β-SA estimator with different schemes of parameter α, case of car noise

Input noisy speech

1.41

1.54

1.71

2.01

2.32

Choice of α = 0

1.57

1.76

2.06

2.40

2.75

Choice of α = 0.22

1.58

1.78

2.11

2.46

2.77

Original choice of α

1.60

1.81

2.15

2.50

2.79

Proposed choice of α

1.66

1.88

2.20

2.54

2.84