Table 2.

Speech intelligibility index calculations for each combination of filter and SNR.^a

	SNR
Bandwidth	0 dB	3 dB	6 dB	9 dB	Quiet
FB	0.41	0.49	0.57	0.66	0.99
LP1	0.39	0.47	0.55	0.63	0.88
LP2	0.29	0.36	0.41	0.47	—
LP3	0.16	0.19	0.23	0.26	—
HP1	0.39	0.47	0.54	0.62	—
HP2	0.34	0.41	0.47	0.54	—
HP3	0.25	0.30	0.35	0.40	—

^aSII = Speech intelligibility index, SNR = signal-to-noise ratio, FB = full bandwidth, LP = low-pass, HP = high-pass.