摘要：This article examines phonetic vowel reduction in the Spanish of Bogota(Colombia). The main objective is to compare the influence of speech condition(read vs. unread speech), stress and vowel type (/i, e, a, o, u/) on duration, F1 andF2 frequencies, and the euclidian distance. Results show that unstressed vowels /e,o, u/ are shorter and have a lower first formant in unread speech than stressedvowels produced in read speech. /a/ is variably realized as an open vowel [a], acentral near-open vowel [ɐ] or a schwa [ә]. The stressed vowels /a/ and /o/ areslightly backed, and the stressed /e/ and /u/ are slightly fronted. The high vowel /i/remains somewhat stable in the experimental conditions studied.
