Evaluating the forensic importance of glottal source features through the voice analysis of twins and non-twin siblings

San Segundo, Eugenia y Gómez Vilda, Pedro (2015). Evaluating the forensic importance of glottal source features through the voice analysis of twins and non-twin siblings. "Language and Law / Linguagem e Direito", v. 1 (n. 2); pp. 22-41. ISSN 2183-3745.

Descripción

Título: Evaluating the forensic importance of glottal source features through the voice analysis of twins and non-twin siblings
Autor/es:
  • San Segundo, Eugenia
  • Gómez Vilda, Pedro
Tipo de Documento: Artículo
Título de Revista/Publicación: Language and Law / Linguagem e Direito
Fecha: 2015
Volumen: 1
Materias:
Palabras Clave Informales: Forensic phonetics; Glottal source; Twins; Siblings; Biometry; Phonation
Escuela: E.T.S. de Ingenieros Informáticos (UPM)
Departamento: Arquitectura y Tecnología de Sistemas Informáticos
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

In this study we have analyzed 853 tokens of the vowel ?ller [e:], extracted from spontaneous speech fragments of 54 male Spanish speakers (North- Central Peninsular variety), each one recorded on two separate sessions. The speakers ? to be compared in a pairwise fashion ? were divided in four groups: 24 monozygotic (MZ) twins, 10 dizygotic (DZ) twins, 8 non-twin brothers and 12 unrelated speakers. From the extracted vowel ?llers, considered long enough for a glottal analysis (around 160 milliseconds), a vector of 68 glottal parameters was created. Our hypothesis that higher similarity values would be found in the intra-pair comparison of MZ twins than in DZ twins, brothers or unrelated speakers was con?rmed, which suggests that the glottal parameters under investigation are genetically in?uenced. This ?nding seems of great forensic importance, as a phonetic parameter is considered forensically robust provided that it exhibits large between-speaker variation while it remains as consistent as possible for each speaker (i.e. small within-speaker variation).

Proyectos asociados

TipoCódigoAcrónimoResponsableTítulo
Gobierno de EspañaTEC2012-38630-C04-01 TEC2012-38630-C04-04Sin especificarUniversidad Politécnica de MadridEvaluación multimodal de trastornos neurológicos mediante la caracterización de la voz, dinámica de los pliegues vocales y secuencias sacádicas

Más información

ID de Registro: 40911
Identificador DC: http://oa.upm.es/40911/
Identificador OAI: oai:oa.upm.es:40911
URL Oficial: https://sigarra.up.pt/fdup/pt/pub_geral.revista_view?pi_revista_id=18421
Depositado por: Memoria Investigacion
Depositado el: 26 Oct 2016 08:29
Ultima Modificación: 26 Oct 2016 08:29
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