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Related Experiment Videos

The bone-anchored hearing aid: reference quantities and functional gain

P U Carlsson1, B E Håkansson

  • 1Department of Applied Electronics, Chalmers University of Technology, Gothenburg, Sweden.

Ear and Hearing
|February 1, 1997
PubMed
Summary

Gain characteristics differ between air and bone conduction hearing aids. This study derives the relationship between gain and functional gain (FG) for bone conduction devices, including the bone-anchored hearing aid (BAHA).

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Area of Science:

  • Audiology
  • Biomedical Engineering
  • Hearing Science

Background:

  • Hearing aid gain is a critical performance parameter.
  • Functional gain (FG) typically equals device gain for air conduction hearing aids.
  • Bone conduction devices, like the bone-anchored hearing aid (BAHA), exhibit different gain characteristics.

Purpose of the Study:

  • To derive the relationship between gain and functional gain (FG) for bone conduction devices.
  • To clarify discrepancies in gain measurements for bone-anchored hearing aids (BAHA).
  • To present reference quantities for bone conduction device measurements.

Main Methods:

  • Theoretical derivation of gain vs. FG for bone conduction.
  • Analysis of bone-anchored hearing aid (BAHA) performance.

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  • Review of standard measurement reference quantities.

    • Main Results:

    • A distinct relationship between gain and FG was established for bone conduction devices.
    • The study quantifies the differences observed in bone-anchored hearing aid (BAHA) measurements.
    • Appropriate reference quantities for bone conduction measurements are detailed.

    Conclusions:

    • The gain characteristics of bone conduction devices, including BAHA, necessitate specific calculation methods.
    • Understanding the gain-FG relationship is crucial for accurate hearing aid fitting and performance evaluation.
    • Standardized reference quantities improve the reliability of bone conduction device measurements.