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Related Experiment Videos

FFT-based digital tactile vocoder system for real-time use.

O Ozdamar1, C N Lopez, D K Oller

  • 1Department of Biomedical Engineering, University of Miami, Florida 33124.

Medical & Biological Engineering & Computing
|March 1, 1992
PubMed
Summary
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A new digital vibrotactile vocoder system uses a microprocessor to translate speech into tactile sensations for the deaf. This artificial hearing device shows potential for training and research in hearing restoration.

Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Speech Processing

Background:

  • Deaf individuals face significant challenges in communication and auditory perception.
  • Existing assistive technologies for hearing impairment have limitations.
  • Artificial hearing research seeks novel methods to restore auditory function.

Purpose of the Study:

  • To develop and evaluate a microprocessor-based real-time digital vibrotactile vocoder system.
  • To explore the potential of tactile speech presentation for the deaf.
  • To advance artificial hearing research through novel sensory substitution.

Main Methods:

  • A real-time digital vibrotactile vocoder system was designed using a microcomputer with a digital signal processor.
  • Speech signals were processed using a fast Fourier transform for spectral analysis.

Related Experiment Videos

  • Processed speech was delivered to the skin via a belt with 8 or 16 vibrators.

    • Main Results:

    • The system successfully processed speech in real time for tactile presentation.
    • It demonstrated the capability to present arbitrary spatiotemporal patterns on the skin.
    • Preliminary experiments with a deaf subject showed promising results for artificial hearing.

    Conclusions:

    • The developed vibrotactile vocoder system is a potentially effective device for artificial hearing.
    • This technology offers a new avenue for training the deaf and conducting auditory research.
    • Further research is warranted to optimize the system and assess its long-term efficacy.