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Related Experiment Videos

Voice recognition and aphasia: can computers understand aphasic speech?

J Wade1, B Petheram, R Cain

  • 1Speech and Language Therapy Research Unit, Frenchay Hospital, Bristol, UK. julia@speech-therapy.org.uk

Disability and Rehabilitation
|November 8, 2001
PubMed
Summary

This study shows that voice recognition software can be trained for individuals with aphasia, enabling them to use dictation tools. Phrase-level dictation proved more accurate than single words for both groups.

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Area of Science:

  • Speech-Language Pathology
  • Human-Computer Interaction
  • Assistive Technology

Background:

  • Aphasia significantly impacts communication, often limiting access to standard assistive technologies.
  • Voice recognition software (VRS) typically requires extensive linguistic training, posing a barrier for individuals with aphasia.

Purpose of the Study:

  • To introduce a novel VRS training method for individuals with aphasia, bypassing standard linguistic demands.
  • To evaluate VRS accuracy with aphasic speech compared to unimpaired controls.

Main Methods:

  • Six participants with aphasia and five controls trained VRS on a 50-word, 24-phrase vocabulary over five sessions.
  • Speech and language impairments were assessed at baseline for the aphasia group.
  • VRS accuracy was measured at baseline and after four training sessions for single-word and phrase dictation.

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Main Results:

  • VRS accuracy for single-word dictation was comparable between individuals with aphasia and controls.
  • Phrase-level dictation demonstrated higher accuracy than single-word dictation for both groups.
  • Greater speech difficulties correlated with lower VRS accuracy scores in participants with aphasia.

Conclusions:

  • Customized VRS training enables individuals with aphasia to utilize dictation technology.
  • VRS shows potential as a dictation tool and an input device for speech therapy applications.