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Formant frequency information for vowels averaged across 5 male speakers.
data (f99)
A data frame with the following columns:
sex
- A factor indicating speaker sex.
vowel
- The vowel category in x-sampa.
f1
- A numeric vector indcating the vowel F1 in Hz.
f2
- A numeric vector indcating the vowel F2 in Hz.
Fourakis, M., Botinis, A. & Katsaiti, M. (1999). Acoustic characteristics of Greek vowels. Phonetica, 56. 28-43.
#data(f99) #vowelplot (f99$f1, f99$f2, f99$vowel, logaxes = 'xy', xsampa = TRUE)
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