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Related Experiment Videos

Hearing aids for high-frequency hearing loss.

J E Davies1, D G John, M J Jones

  • 1Department of Otolaryngology, Royal Gwent Hospital, Newport, Gwent, UK.

Clinical Otolaryngology and Allied Sciences
|August 1, 1990
PubMed
Summary
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A new study found that while both hearing aids performed similarly on speech-in-noise tests, patients preferred the commercial aid for conversations. This hearing aid may offer better conversational benefits for high-frequency hearing loss.

Area of Science:

  • Audiology
  • Hearing Science
  • Biomedical Engineering

Background:

  • High-frequency hearing loss is common and significantly impacts communication.
  • Standard NHS hearing aids and commercial aids with high-frequency emphasis differ in acoustic properties.
  • Patient preference and objective measures are crucial for evaluating hearing aid effectiveness.

Purpose of the Study:

  • To compare the relative benefits of a standard NHS hearing aid versus a high-frequency emphasis commercial aid.
  • To assess patient outcomes using disability questionnaires and speech-in-noise tests.
  • To evaluate subject preference between the two hearing aid types.

Main Methods:

  • A cross-over study design was employed.
  • Participants with high-frequency hearing loss used each hearing aid for 6 weeks.

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  • Outcomes were measured using disability questionnaires and the Free-field Audiometric Evaluation of Intelligibility II (FAAF II) test.

    • Main Results:

    • No significant difference in total FAAF II test scores was observed between the two aids.
    • Frequency-specific analysis revealed reduced use of low-frequency information with the high-frequency emphasis aid.
    • Questionnaire responses indicated greater conversational benefit and preference for the high-frequency emphasis aid.

    Conclusions:

    • The high-frequency emphasis commercial aid may provide superior subjective conversational benefits for individuals with high-frequency hearing loss.
    • Objective speech-in-noise measures did not differentiate between the aids, suggesting a potential disconnect with subjective experience.
    • Patient preference for the commercial aid might be linked to its lower low-tone gain compared to the standard NHS aid.