Table 6 Significant interactions between acoustic correlates influencing vowel stress for each speaker group

Speaker group	Significant interactions
EN	– F0-spectra
JP_Adv	– intensity-F0
	– intensity-duration
	– duration-spectra
JP_Beg	– intensity-duration
	– F0-duration
	– duration-spectra
KR	– intensity-duration
	– intensity-spectra
	– F0-spectra
	– duration-spectra