TABLE I.

Correlation coefficients (r) between listeners’ sentence recognition scores and intelligibility index values computed with three different segmentation strategies. The scaled entropy was computed with proportion coefficient p = 60%.

		Scaled entropy		RMS-level			Sonorant/Obstruent
Intelligibility measure	All segments	H-entropy	L-entropy	H-level	M-level	L-level	Sonorants	Obstruents
NCM	0.80	0.82	0.78	0.83	0.89	0.77	0.84	0.64
CSII	0.82	0.82	0.82	0.85	0.91	0.86	0.85	0.69