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Related Experiment Videos

Managing an "own voice" problem that has an amplifier origin.

Francis Kuk1

  • 1Widex Office of Research in Clinical Amplification, Widex Hearing Aid Company, 2300 Cabot Drive, Suite 415, Lisle, IL 60532, USA. Fkuk@widexmail.com

Journal of the American Academy of Audiology
|March 7, 2006
PubMed
Summary

Hearing aid wearers often complain of voice hollowness due to excessive low-frequency sound. This study reveals that insufficient low-frequency gain, not excessive gain, can also cause this common hearing aid issue.

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Area of Science:

  • Audiology
  • Hearing Science
  • Acoustics

Background:

  • Hearing aid wearers commonly report a 'hollowness' in their own voice.
  • This is typically attributed to excessive low-frequency sound pressure level (SPL) in the ear canal.
  • Standard practice involves increasing vent diameter or reducing low-frequency gain to mitigate this.

Observation:

  • A case study investigated a hearing aid wearer's complaint of voice hollowness.
  • The patient's experience contrasted with typical assumptions about low-frequency SPL.
  • A systematic diagnostic process was employed to identify the root cause.

Findings:

  • The origin of the perceived hollowness was found to be insufficient low-frequency gain.
  • This was identified by comparing the current hearing aid fitting to a previous one.

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  • The patient's complaint was resolved by adjusting the gain to compensate for the deficit.

    • Implications:

    • This case highlights that voice quality complaints in hearing aid users can stem from under-amplification of low frequencies.
    • Clinicians should consider insufficient gain as a potential cause of perceived hollowness.
    • An objective, systematic approach to fine-tuning can effectively resolve wearer complaints related to sound quality.