This paper addresses several questions regarding the acoustic properties of Isthmus Zapotec vowels. Based on earlier recordings of a female, mother-tongue speaker of the language, average formant frequencies for each of the five phonemic vowels are determined for this speaker. I then look at differences in formant frequencies between stressed and unstressed modal vowels. Finally, I compare modal, laryngealized and checked productions of the vowels, to see if there are systematic differences between these three phonation types.
"Isthmus Zapotec vowel formants,"
Work Papers of the Summer Institute of Linguistics, University of North Dakota Session: Vol. 50
, Article 4.
Available at: https://commons.und.edu/sil-work-papers/vol50/iss1/4