Memorias de investigación
Ponencias en congresos:
Phonotactic Language Recognition using i-vectors and Phoneme Posteriogram Counts
Año:2012
Áreas de investigación
  • Tecnología electrónica y de las comunicaciones,
  • Ingeniería eléctrica, electrónica y automática
Datos
Descripción
This paper describes a novel approach to phonotactic LID, where instead of using soft-counts based on phoneme lattices, we use posteriogram to obtain n-gram counts. The high-dimensional vectors of counts are reduced to low-dimensional units for which we adapted the commonly used term i-vectors. The reduction is based on multinomial subspace modeling and is designed to work in the total-variability space. The proposed technique was tested on the NIST 2009 LRE set with better results to a system based on using soft-counts (Cavg on 30s: 3.15% vs 3.43%), and with very good results when fused with an acoustic i-vector LID system (Cavg on 30s acoustic 2.4% vs 1.25%). The proposed technique is also compared with another low dimensional projection system based on PCA. In comparison with the original soft-counts, the proposed technique provides better results, reduces the problems due to sparse counts, and avoids the process of using pruning techniques when creating the lattices.
Internacional
Si
Nombre congreso
InterSpeech 2012, 13th Annual Conference of the International Speech Communication Association
Tipo de participación
960
Lugar del congreso
Portland, Oregon
Revisores
Si
ISBN o ISSN
1990-9772
DOI
Fecha inicio congreso
09/09/2012
Fecha fin congreso
13/09/2012
Desde la página
1
Hasta la página
4
Título de las actas
InterSpeech 2012, 13th Annual Conference of the International Speech Communication Association
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Luis Fernando D'Haro Enriquez UPM
  • Autor: Ondrej Glembek 2Brno University of Technology, Speech@FIT group and IT4I Center of Excellence, Czech Republic
  • Autor: Oldrich Plchot 2Brno University of Technology, Speech@FIT group and IT4I Center of Excellence, Czech Republic
  • Autor: Pavel Matejka 2Brno University of Technology, Speech@FIT group and IT4I Center of Excellence, Czech Republic
  • Autor: Mehdi Soufifar 2Brno University of Technology, Speech@FIT group and IT4I Center of Excellence, Czech Republic
  • Autor: Ricardo de Cordoba Herralde UPM
  • Autor: Jan Cernocký 2Brno University of Technology, Speech@FIT group and IT4I Center of Excellence, Czech Republic
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Grupo de Tecnología del Habla
  • Departamento: Ingeniería Electrónica