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Table 3 Comparison of STI values of different methods

From: Speech intelligibility improvement in noisy reverberant environments based on speech enhancement and inverse filtering

Methods R1 R2 R3 R4
No equalized RIR 0.99 0.74 0.56 0.40
FIF method 0.99 0.85 0.79 0.71
W-EQ method 1.00 0.88 0.80 0.73
A-EQ method 0.99 0.81 0.74 0.66
Improved FIF method 1.00 0.92 0.84 0.79
  1. R1, R2, R3, and R4 represent the anechoic chamber (T60 < 0.8 s), small classroom (T60 = 0.65 s), large classroom (T60 = 1.39 s), and hall (T60 = 3.57 s), respectively