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Portuguese, a language of the Ibero-Romance subgroup of the Romance languages, has a variety which is spoken in Brazil, a country with circa 170 million inhabitants, of whom about 161 million speak Portuguese and 138 million live in cities. For this illustration of Brazilian Portuguese (henceforth BP), we have recorded a speaker whose choice was guided by two demographic criteria, namely, to represent the most populous dialectal region, that of São Paulo, and the most frequent age range (15–29 years, corresponding to 28% of the Brazilian population. Source: IBGE, Demographic census 2000). The speaker was a female undergraduate student at the University of Campinas at age 21 at the time of the recording. She was born in the city of São Paulo, where she lived up to age 10. From then on she has been living in Valinhos, a city on the outskirts of Campinas.
Barbosa et al. (Wed,) studied this question.