Vol. 22 (2012): (NE-1) ENC 2012
Artículos de Investigación

Communication Interface for Mexican Spanish Dysarthric Speakers

Publicado 2012-03-01

Palabras clave

  • Dysarthric speech,
  • assistive technology,
  • automatic speech recognition.
  • Dysarthric speech,
  • assistive technology,
  • automatic speech recognition.

Cómo citar

Bonilla-Enriquez, G., & Caballero-Morales, S.-O. (2012). Communication Interface for Mexican Spanish Dysarthric Speakers. Acta Universitaria, 22, 98–105. https://doi.org/10.15174/au.2012.348

Resumen

Dysarthria is a motor speech disorder due to weakness or poor coordination of the speechmuscles. This condition can be caused by a stroke, cerebral palsy, or by a traumatic braininjury. For Mexican people with this condition there are few, if any, assistive technologies to improve their social interaction skills. In this paper we present our advances towards the development of a communication interface for dysarthric speakers whose native language is Mexican Spanish. We propose a methodology that relies on (1) special design of a training normal-speech corpus with limited resources, (2) standard speaker adaptation, and (3) control of language model perplexity, to achieve high Automatic Speech Recognition (ASR) accuracy. The interface allows the user and therapist to perform tasks such as dynamic speaker adaptation, vocabulary adaptation, and text-to-speech (TTS) synthesis. Live tests were performed with a mildly dysarthric speaker, achieving accuracies of 93%-95% for spontaneous speech.