Resumo

GONZALEZ-RATIVA, María Claudia; OROZCO-ARROYAVE, Juan Rafael; OSPINA GIRALDO, Liliana Estefanía  e  CHAPARRO MANRIQUE, Érika Patricia. Approximant [ð̞] in context -ado in the Spanish spoken in Medellín: experimental approach for the identification of allophonic variants and its acoustic characterization. Leng. [online]. 2019, vol.47, n.2, suppl.1, pp.514-536. ISSN 0120-3479.  https://doi.org/10.25100/lenguaje.v47i3.7560.

The processes of spirantization and elision of /d̪/ have been recurrent in the history of Spanish and they have been studied in its geographical, social and stylistic dispersion. Hispanic dialectology and sociolinguistics have revealed three variants in intervocalic and final contexts: approximants [ð], [ð] and elision [Ø]. The majority of these works are based on atlas cartography, on the impressionistic selection or on spectrographic data. In this paper the results of an experiment on automation will be presented from a experimental test in six informants from Medellin, in order to define the acoustic nature of the variant of /d̪/ intervocalic. The projection of a 9 acoustic measurements matrix to a two-dimensional representation using the t-SNE technique is analyzed in order to observe possible groupings in the variants and their automatic classification. The aim is to investigate viable and efficient strategies from computational linguistics in sociolinguistic studies of phonological variation.

Palavras-chave : phonetics; phonology; allophonic variants; computational linguistics.

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