Memorias de investigación
Ponencias en congresos:
Exploring Pause Fillers in Conversational Speech for Forensic Phonetics: Findings in a Spanish Cohort Including Twins
Año:2017
Áreas de investigación
  • Ingenierías,
  • Humanidades y ciencias sociales
Datos
Descripción
Pause fillers occur naturally during conversational speech, and have recently generated interest in their use for forensic applications. We extracted pause fillers from conversational speech from 54 speakers, including twins, whose voices are often perceptually similar. Overall 872 tokens of the sound [e:] were extracted (7-33 tokens per speaker), and objectively characterised using 315 acoustic measures. We used a Random Forest (RF) classifier and tested its performance using a leaveone- sample-out scheme to obtain probabilistic estimates of binary class membership denoting whether a query token belongs to a speaker. We report results using the Receiver Operating Characteristic (ROC) curve, and computing the Area Under the Curve (AUC). When the RF was presented with at least 20 tokens in the training phase for each of the two classes, we observed AUC in the range 0.71-0.98. These findings have important implications in the potential of pause fillers as an additional objective tool in forensic speaker verification.
Internacional
Si
Nombre congreso
8th International Conference on Pattern Recognition Systems (ICPRS-17)
Tipo de participación
960
Lugar del congreso
Madrid
Revisores
Si
ISBN o ISSN
978-1-78561-652-5
DOI
Fecha inicio congreso
12/07/2017
Fecha fin congreso
13/07/2017
Desde la página
232
Hasta la página
237
Título de las actas
Proceedings of the 8th International Conference on Pattern Recognition Systems (ICPRS-17)
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Athanasios Tsanas University of Edinburgh
  • Autor: Eugenia San Segundo University of York
  • Autor: Pedro Gomez Vilda UPM
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Informática Aplicada al Procesado de Señal e Imagen
  • Centro o Instituto I+D+i: Centro de tecnología Biomédica CTB
  • Departamento: Arquitectura y Tecnología de Sistemas Informáticos