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Related Experiment Videos

Psychoacoustic aspects of speech pattern coding for the deaf.

A Faulkner1, A J Fourcin, B C Moore

  • 1Department of Phonetics and Linguistics, University College London, England.

Acta Oto-Laryngologica. Supplementum
|January 1, 1990
PubMed
Summary

The SiVo aid, offering voice fundamental frequency and voicing cues, improved speech perception for profoundly deaf adults compared to conventional hearing aids. Some users preferred the SiVo aid, especially those with severe hearing loss.

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Area of Science:

  • Audiology
  • Speech-Language Pathology
  • Assistive Listening Devices

Background:

  • Conventional hearing aids with extended low-frequency output may not fully restore speech perception for individuals with profound hearing loss.
  • Lipreading remains a primary communication method for many profoundly deaf individuals, but it often lacks crucial auditory cues.

Purpose of the Study:

  • To compare the effectiveness of the SiVo aid, which provides voice fundamental frequency and voicing information, against a conventional hearing aid for improving speech perception during lipreading.
  • To assess user preference and the impact of different auditory cues on consonant perception and intonation identification.

Main Methods:

  • Eight profoundly deaf adults participated in the study.
  • Speech perception tests included consonant confusions in lipreading and intonation contrast identification, both with and without hearing aids.

Related Experiment Videos

  • Audiometric and psychoacoustic measures were collected to characterize hearing loss.

    • Main Results:

    • In the intonation task, 7 out of 7 patients performed better with the SiVo aid.
    • Four out of 8 patients preferred the SiVo aid, with 2 showing significant improvements in aided lipreading of consonants.
    • Patients preferring the SiVo aid often had profound hearing loss and limited dynamic range; inclusion of voiceless excitation patterns further benefited some users.

    Conclusions:

    • The SiVo aid demonstrates potential as an effective assistive listening device for improving speech perception, particularly intonation, in profoundly deaf individuals.
    • User preference for the SiVo aid is linked to the severity of hearing loss, suggesting a personalized approach to hearing aid selection.
    • The addition of voiceless excitation patterns may further enhance speech understanding for certain users, indicating the importance of comprehensive auditory cue provision.