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Related Experiment Videos

Microprocessor-based hearing aid for the deaf.

Y Shimizu1

  • 1Industrial Products Research Institute, Ibaraki, Japan.

Journal of Rehabilitation Research and Development
|January 1, 1989
PubMed
Summary
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A new speech aid for the profoundly deaf converts speech to text visually or tactually. A novel tactile mode using apparent movement reduced symbol presentation time, improving sentence recognition accuracy.

Area of Science:

  • Biomedical Engineering
  • Assistive Technology
  • Neuroscience

Background:

  • Profound deafness significantly impacts communication.
  • Existing speech reception aids have limitations in word and speaker recognition.
  • Visual and tactile feedback methods are used in current assistive technologies.

Purpose of the Study:

  • To develop an improved speech reception aid for profoundly deaf individuals.
  • To introduce a novel tactile display mode utilizing the psychophysical effect of apparent movement.
  • To reduce the presentation time of tactile symbols and enhance speech recognition.

Main Methods:

  • Development of a microprocessor-based speech reception aid.
  • Implementation of both visual and tactile text presentation.

Related Experiment Videos

  • Introduction of a new tactile mode based on apparent movement.
  • Laboratory experiments to evaluate word and sentence recognition accuracy and speed.

    • Main Results:

    • Subjects recognized 3-7 letter words immediately with visual display.
    • Tactile display recognition took approximately 5 seconds per word.
    • Tactile presentation time was dominated by stimulator activation.
    • Over 90% accuracy was achieved for 3-4 word sentences after 18 sessions with tactile feedback.

    Conclusions:

    • The developed speech reception aid shows promise for profoundly deaf users.
    • The novel tactile mode effectively reduces symbol presentation time.
    • Further research is needed to optimize tactile display performance and expand word recognition capabilities.