An improved method for voice pathology detection by means of a HMM-based feature space transformation

  • Authors:
  • Julián D. Arias-Londoño;Juan I. Godino-Llorente;Nicolás Sáenz-Lechón;Víctor Osma-Ruiz;Germán Castellanos-Domínguez

  • Affiliations:
  • Universidad Politécnica de Madrid, Dep. ICS, EUIT Telecomunicación, Ctra. Valencia, km. 7, 28031 Madrid, Spain and Universidad Nacional de Colombia, Sede Manizales, GC&PDS, Campus La Nub ...;Universidad Politécnica de Madrid, Dep. ICS, EUIT Telecomunicación, Ctra. Valencia, km. 7, 28031 Madrid, Spain;Universidad Politécnica de Madrid, Dep. ICS, EUIT Telecomunicación, Ctra. Valencia, km. 7, 28031 Madrid, Spain;Universidad Politécnica de Madrid, Dep. ICS, EUIT Telecomunicación, Ctra. Valencia, km. 7, 28031 Madrid, Spain;Universidad Nacional de Colombia, Sede Manizales, GC&PDS, Campus La Nubia, km. 9, víía al Aeropuerto la Nubia, Manizales, Caldas, Colombia

  • Venue:
  • Pattern Recognition
  • Year:
  • 2010

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Abstract

This paper presents new a feature transformation technique applied to improve the screening accuracy for the automatic detection of pathological voices. The statistical transformation is based on Hidden Markov Models, obtaining a transformation and classification stage simultaneously and adjusting the parameters of the model with a criterion that minimizes the classification error. The original feature vectors are built up using classic short-term noise parameters and mel-frequency cepstral coefficients. With respect to conventional approaches found in the literature of automatic detection of pathological voices, the proposed feature space transformation technique demonstrates a significant improvement of the performance with no addition of new features to the original input space. In view of the results, it is expected that this technique could provide good results in other areas such as speaker verification and/or identification.