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Related Experiment Videos

Functional gain.

G B Haskell1

  • 1Audiology and Speech Pathology Service, V.A. Medical Center, Seattle, Washington 98108.

Ear and Hearing
|October 1, 1987
PubMed
Summary
This summary is machine-generated.

Functional gain, a popular hearing aid evaluation technique, offers subjective insights despite potential noise contamination. Insertion gain measurements are more recent but lack the user-specific data provided by functional gain.

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Area of Science:

  • Audiology
  • Hearing Science
  • Medical Acoustics

Background:

  • Functional gain was a widely adopted hearing aid evaluation method since 1975.
  • Recent advancements include probe tube systems for insertion gain measurement.
  • The utility of functional gain has been questioned with the rise of new technologies.

Purpose of the Study:

  • To review the primary advantages and disadvantages of functional gain.
  • To compare functional gain with insertion gain measurements.
  • To assess the ongoing relevance of functional gain in audiology.

Main Methods:

  • Review of existing literature on hearing aid evaluation techniques.
  • Analysis of the benefits and drawbacks of functional gain.
  • Comparison of subjective data from functional gain with objective data from insertion gain.

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Main Results:

  • Functional gain provides valuable subjective user information.
  • Functional gain measurements can be affected by external and internal noise.
  • Insertion gain offers objective measurements but lacks subjective user feedback.

Conclusions:

  • Functional gain remains a useful tool for obtaining subjective hearing aid user data.
  • Despite limitations, functional gain complements objective measures like insertion gain.
  • The choice between functional and insertion gain depends on the specific audiological evaluation goals.