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Related Experiment Videos

Human ultrasonic speech perception.

M L Lenhardt1, R Skellett, P Wang

  • 1Department of Otolaryngology, Medical College of Virginia, Virginia Commonwealth University, Richmond 23298.

Science (New York, N.Y.)
|July 5, 1991
PubMed
Summary

Ultrasonic bone conduction hearing enables frequency discrimination and speech detection across various hearing abilities. This technology offers a potential new communication channel for hearing disorder rehabilitation.

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Area of Science:

  • Audiology
  • Bioacoustics
  • Neuroscience

Background:

  • Traditional hearing aids struggle with severe hearing loss.
  • Bone conduction offers an alternative pathway for sound transmission.
  • Ultrasonic frequencies have not been fully explored for auditory rehabilitation.

Purpose of the Study:

  • To investigate the efficacy of bone-conducted ultrasonic hearing.
  • To assess speech perception and frequency discrimination using ultrasonic stimuli.
  • To evaluate its potential as an alternative communication channel.

Main Methods:

  • Speech signals were modulated into the ultrasonic range.
  • Participants included normal, older hearing-impaired, and profoundly deaf subjects.
  • Subjects perceived speech stimuli via bone-conducted ultrasound.

Main Results:

  • Successful frequency discrimination was achieved.
  • Clear perception of speech stimuli was reported.
  • Subjects did not report high-frequency vibration sensations.

Conclusions:

  • Bone-conducted ultrasonic hearing supports essential auditory functions.
  • This technology shows promise for hearing rehabilitation.
  • Ultrasonic bone conduction may serve as a novel communication pathway.

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