Table 3.

Averaged value of the lognormal parameters for young healthy speakers and speakers with laryngeal pathologies (parameter with statistically significant difference in italic)

	Formant estimation method
	“To formant (keep all)”			“To formant (sl)”
Parameter	Control (20–30)	LP (20–30)	p value	Control (20–30)	LP (20–30)	p value
$\overline{\mathrm{\Delta }{t}_o}$	0.067 ± 0.008	0.066 ± 0.008	0.06	0.067 ± 0.0077	0.067 ± 0.007	0.97
NbLog	24 ± 4.5	26 ± 7.6	< 0.001	23 ± 4.7	26 ± 8	< 0.001
$\overline{\sigma }$	0.12 ± 0.05	0.118 ± 0.05	0.32	0.15 ± 0.04	0.15 ± 0.05	0.71
$\overline{\mu }$	− 1.55 ± 0.18	− 1.54 ± 0.14	0.46	− 1.60 ± 0.17	− 1.60 ± 0.17	0.5
$\overline{V_{\text{p}}}$	23.68 ± 4.81	23.38 ± 4.04	0.74	14.2 ± 2.18	14.14 ± 1.93	0.98
$\overline{D}$	1.25 ± 0.25	1.22 ± 0.2	0.33	0.79 ± 0.12	0.79 ± 0.1	0.84
SNR	20 ± 3.2	19.5 ± 3.5	0.01	18.98 ± 3.56	17.62 ± 3.65	0.04