%0 Journal Article
%T A simetria no sistema voc¨¢lico do portugu¨ºs brasileiro
%A Leda Bisol
%J Lingu¨ªstica : Revista de Estudos Lingu¨ªsticos da Universidade do Porto
%D 2010
%I Universidade do Porto
%X The phonological system of Brazilian Portuguese has two rules of neutralization in favor of high vowels and not three, as it has been postulated. The asymmetrical subsystem of four pos- tonic vowels in non-final position is only an effect of frequency, for both middle vowels /e, o/ are shown to be sensitive to raising. It seems to be a case of expansion of the minimum system of three vowels which, in search of regularization, causes variation between two subsystems, the one with five and the one with three vowels
%K Mid vowels
%K neutralization
%K variation
%U http://ler.letras.up.pt/uploads/ficheiros/8964.pdf