Table 7. Within-sex contrasts for the acoustic parameters across conditions in female speakers.

Acoustic parameters	Contrasts
	Neutral vs. Masc		Neutral vs. Fem
All vowels (N = 14)	F	p	F	p
F0mean	14.31	0.002*	24.80	<0.001*
F0CV	0.26	0.619	5.33	0.038*
F1	10.17	0.007*	0.34	0.569
F2	17.10	0.001*	1.59	0.229
F3	10.56	0.006*	2.57	0.133
F4	20.60	0.001*	0.99	0.002*
ΔF	26.17	<0.001*	2.15	0.166

F-ratio (F) and p-value (p) for: mean fundamental frequency (F0mean), coefficient of variation (F0CV), first four formant frequencies (F1–F4) and formant spacing (ΔF). Significant effects are indicated with an asterisk. “Masc” and “Fem” represent the masculinised and feminised conditions.