TABLE II.

Acoustic parameter levels defining the continua of formants, vowel-inherent spectral change, and vowel duration. Each parameter was varied orthogonally.

		Step number
		1	2	3	4	5	6	7
Formants	F1	446	418	403	389	375	362	335
(Hz)	F2	1993	2078	2122	2167	2213	2260	2357
	F3	2657	2717	2747	2778	2809	2841	2905
	F4	3599	3618	3628	3637	3647	3657	3677
VISC	F1	49	33	16	0	−16
(change	F2	−287	−191	−96	0	96
in Hz)	F3	−33	−22	−11	0	11
	F4	0	0	0	0	0
Duration (ms)		85	100	108	115	122	130	145