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. 2012 Feb 14;2012:850629. doi: 10.5402/2012/850629

Table 1.

Vowel [i] [I] [e] [ε] [æ] [ɑ ] [ɔ] [o] [] [u] [Λ]
F1 (HZ) 280 370 405 600 860 830 560 430 400 330 680
F2 (HZ) 2230 2090 2080 1930 1550 1170 820 980 1100 1260 1310