Table 6. Structure matrix of the discriminant function analysis characterizing individual differences.

	Function
Variables	1	2	3	4	5
Duration	0.31	0.51	0.33	0.45	0.10
MaxF0		−1.27	0.26	0.29
MeanF0	−0.81	1.04		−0.72	0.45
MinF0			0.45	0.51	0.66
F1	−0.55	−0.84	0.22	−0.31
F2	1.11	0.46	−0.51	0.28	0.58
F3	0.34		0.82	−0.64	0.24
F4		−0.80	−0.58	0.29	0.70
F5	−0.35	1.03	−0.84	−0.23
F6	−0.29	−1.18	1.18	−0.56	−0.64
F7	0.59	0.50	−0.37	2.17	0.63
F8	−0.38	0.76		−1.41	−0.47
Proportion of Variance%	72.0	13.9	5.9	4.2	4.0

Discriminant function analysis based on duration, source (F0) and filter (formants) variables. The covariance coefficients represent the contribution of each variable to the discrimination of the different individuals. Unsigned coefficients <0.2 are not represented. Unsigned coefficients >0.6 are bolded.