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Updated: Feb 7, 2026

Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
Published on: September 27, 2024
Background/Aims:
Vowel metaphony, a type of vowel harmony observed in Asturian, is characterized by the raising and/or centralization of stressed mid or low vowels in the presence of a high vowel in word-final position. Descriptions of Asturian metaphony have been based on data collected using exclusively auditory judgments. This study is the first to document the phenomenon acoustically.
Methods:
The data were collected using a word elicitation task and sociolinguistic interviews of 40 speakers from the 2 geographic areas in which metaphony has been observed. Qualitative and quantitative analyses of vocalic distributions were performed.
Results:
The results of the analyses show that: (1) while metaphony still occurs in Asturian, its implementation is highly variable; (2) metaphonized variants remain distinct from other vowels; and (3) the traditional distinction between 2 areas of metaphony cannot be maintained.
Conclusion:
This study provides the first acoustic characterization of vowel metaphony in Asturian, offering empirical evidence on which to build theoretical approaches to vowel metaphony.
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