[Resumen extraído de la fuente original]

This paper presents new information on the vowel u in Portuguese central-southern dialects, which can be defined, from a dialectal point of view, as the area's most important vowel. The data come from AVOC - Atlas Acústico do Vocalismo Tónico Português = Acoustic Atlas of Portuguese Stressed Vowels. This new information demands that traditional ideas on the above-mentioned vowel be revised. This fact has decisive consequences on the classification of Portuguese central-southern dialects, and is taken as a paradigmatic case of the need of a new methodological approach to the study of Portuguese dialects. Keywords / Palavras-chave: acoustic dialectology, Portuguese central-southern dialects, stressed vowels, vowel u / dialectologia acústica, dialectos portugueses do Centro-Sul, vocalismo tónico, vogal u.

ÍNDICE: 1. Introdução: a vogal u nos dialectos portugueses ― visão tradicional | 2. Os dados do AVOC | 3. Conclusões | Referências