The long-term average spectrum in forensic phonetics: From collation to discrimination of speakers

• Jordi Just Alcaraz ^[1]
  1. [1] Universidad de Salamanca

     Universidad de Salamanca

     Salamanca, España

     
• Localización: Estudios de fonética experimental, ISSN 1575-5533, ISSN-e 2385-3573, Nº. 32, 2023, págs. 87-110
• Idioma: inglés
• DOI: 10.1344/efe-2023-32-87-110
• Títulos paralelos:
  • L’espectre mitjà a llarg termini en fonètica judicial: De l’acarament a la discriminació de locutors
• Enlaces
  • Texto completo
• Resumen
  • English

    The present work aims to provide more data regarding the comparison and discrimination of speech samples in the field of forensic phonetics. The methodology used was an acoustic method called longterm average spectrum (LTAS), by calculating its spectral decline. The informants were grouped into a total of four female speakers of the same age by close geographical origins. The extracted data were presented qualitatively and quantitatively. In view of the results, the identification of speakers was not successful in all cases. After discussing the results, implications for judicial phonetics and recommendations for future studies were collected.

  • català

    Aquest treball té per objectiu proporcionar més dades sobre la comparació i la discriminació de mostres de veu en el camp de la fonètica forense. La metodologia utilitzada consisteix en un mètode acústic anomenat espectre mitjà a llarg termini (LTAS), que parteix del càlcul de la seua declinació espectral. Els informants són quatre parlants femenines de la mateixa edat i amb origen geogràfic similars. Les dades extretes es presenten de manera qualitativa i quantitativa. A la vista dels resultats, les parlants no s’identificaren amb èxit en tots els casos. Després de discutir els resultats, es recopilen diverses implicacions per a la fonètica judicial i diferents recomanacions per a estudis futurs.

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