Speech Signal and Facial Image Processing for Obstructive Sleep Apnea Assessment

Table 4

AHI estimation using i-vectors.

Feature	MAE						Correlation coefficient (CC)
	i-vector dimension						i-vector dimension
	400	300	200	100	50	30	400	300	200	100	50	30
i-vector	13.79	13.86	14.20	14.05	13.79	14.05	0.08	0.09	0.05	0.09	0.13	0.08
i-vector + clinical variables	12.80	12.43	12.48	12.63	12.55	12.68	0.33	0.38	0.38	0.36	0.38	0.37

The correlation coefficients (CC) are significant beyond the 0.05 level of confidence.