Abstract
The acoustical spectrum of the five Spanish vowels |a, e, i, o, u| has been delimited to show the areas covered by F1, F2, and F3 and the relative distribution energy among the formants. Through the analysis of the spectral components of vowels, isolated and in consonantal context, it is possible to estimate the different weight of each formant in vowel identification. At least for isolated vowels,F2 andF3 seem to be effective for the identification of [i] and [e] while theF1 andF2 carry the weight for the identification of [o] and [u]. The cue to differentiate [a] seems to beF2. Spanish vowels are compared with cardinals and North American English vowels. There is no correlation with cardinal vowels while similarities are found with English vowels.
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