. Author manuscript; available in PMC: 2015 Jun 30.

Published in final edited form as: J Speech Lang Hear Res. 2011 Aug 23;54(6):1667–1681. doi: 10.1044/1092-4388(2011/09-0279)

Table 3.

F2 target frequency and intensity ratios used in each stimulus series in Experiment 3 for the /ʌ/-/æ/ vowel pair (/ʌ/= step 1; /æ/= step 10).

Virtual formant series	Series step	F1 target frequency (Hz)	Intensity ratio at each VF series step
Virtual formant series	Series step	F1 target frequency (Hz)	Lower pair	Higher pair

VF2.1			1200/1320Hz	1680/1800Hz
	1	1400	0.708	0.292
	2	1428	0.650	0.350
	3	1455	0.594	0.406
	4	1483	0.535	0.465
	5	1511	0.477	0.523
	6	1539	0.419	0.581
	7	1567	0.360	0.640
	8	1594	0.304	0.696
	9	1622	0.246	0.754
	10	1650	0.188	0.813
VF2.2			1080/1200Hz	1800/1920Hz
	1	1400	0.639	0.361
	2	1428	0.600	0.400
	3	1455	0.563	0.438
	4	1483	0.524	0.476
	5	1511	0.485	0.515
	6	1539	0.446	0.554
	7	1567	0.407	0.593
	8	1594	0.369	0.631
	9	1622	0.331	0.669
	10	1650	0.292	0.708
VF2.3			1320/1440Hz	2040/2160Hz
	1	1400	0.972	0.028
	2	1428	0.933	0.067
	3	1455	0.896	0.104
	4	1483	0.857	0.143
	5	1511	0.818	0.182
	6	1539	0.779	0.221
	7	1567	0.740	0.260
	8	1594	0.703	0.297
	9	1622	0.664	0.336
	10	1650	0.625	0.375