Table 2.

Correlation coefficients (r) and standard deviations of the prediction error (σ_e) between sentence recognition scores and various intelligibility measures for vocoded Mandarin Chinese, vocoded English, and wideband (non-vocoded) Mandarin Chinese. The modulation rate (MR) used in the implementation of the NCM measure is indicated.

	Vocoded Mandarin Chinese			Non-vocoded Mandarin Chinese	Vocoded English
Intelligibility measures	Band-weighting function	r	σe(%)	Band-weighting function	r	σe (%)	Band-weighting function	r	σe (%)
CSII	ANSI	0.88	10.2	ANSI	0.90	12.6	ANSI	0.94	8.7
CSIIhigh	ANSI	0.74	14.5	ANSI	0.97	6.5	ANSI	0.88	12.4
CSIImid	ANSI	0.90	9.6	ANSI	0.95	8.8	ANSI	0.95	8.4
CSIIlow	ANSI	0.59	17.5	ANSI	0.65	21.7	ANSI	0.78	16.5
CSII	W2, p = 0.5	0.89	9.7	W2, p = 0.5	0.93	10.6	W2, p = 0.5	0.95	8.6
CSIIhigh	W2, p = 4	0.91	9.2	W2, p = 4	0.97	7.2	W2, p = 0.05	0.88	12.4
CSIImid	W2, p = 0.5	0.91	9.1	W2, p = 0.5	0.95	8.9	W2, p = 0.5	0.95	8.2
CSIIlow	W2, p = 4	0.72	15.1	W2, p = 1	0.71	19.9	W1, p = 4	0.86	13.4
NCM	$W_i^{(2)}$, p = 0.12 (MR = 100 Hz)	0.94	7.5	$W_i^{(1)}$, p = 1.5 (MR = 100 Hz)	0.96	8.0	$W_i^{(1)}$, p = 1.5 (MR = 100 Hz)	0.96	7.1
ANSI (MR = 12.5 Hz)	0.85	11.5	ANSI (MR = 12.5 Hz)	0.82	16.3	ANSI (MR = 12.5Hz)	0.86	13.4