Automated Diagnosis and Assessment of Dysarthric Speech Using Relevant Prosodic Features

  • Kamil Lahcene Kadi
  • Sid Ahmed Selouani
  • Bachir Boudraa
  • Malika Boudraa
Conference paper


In this paper, linear discriminant analysis (LDA) is combined with two automatic classification approaches, the Gaussian mixture model (GMM) and support vector machine (SVM), to automatically assess dysarthric speech. The front-end processing uses a set of prosodic features selected by LDA on the basis of their discriminative ability, with Wilks’ lambda as the significant measure to show the discriminant power. More than eight hundred sentences produced by nine American dysarthric speakers of the Nemours database are used throughout the experiments. Results show a best classification rate of 93 % with the LDA/SVM system achieved over four severity levels of dysarthria, ranged from not affected to the more seriously ill. This tool can aid speech therapist and other clinicians to diagnose, assess, and monitor dysarthria. Furthermore, it may reduce some of the costs associated with subjective tests.


Dysarthria GMM LDA Nemours database Prosodic features Severity-level assessment SVM 



This work was supported in part by the Natural Sciences and Engineering Research Council of Canada (NSERC).


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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  • Kamil Lahcene Kadi
    • 1
  • Sid Ahmed Selouani
    • 2
  • Bachir Boudraa
    • 1
  • Malika Boudraa
    • 1
  1. 1.Faculty of Electronics and Computer ScienceUniversity of Sciences and Technology Houari BoumedieneBab Ezzouar AlgiersAlgeria
  2. 2.Department of Information ManagementUniversity of MonctonMonctonCanada

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