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Estimating bone conduction transfer functions using otoacoustic emissions.

David W Purcell1, Hans Kunov, William Cleghorn

  • 1Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario M5S 3G9, Canada. d.purcell@utoronto.ca

The Journal of the Acoustical Society of America
|August 29, 2003
PubMed
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This study presents an objective method to estimate bone conduction transfer functions using distortion product otoacoustic emissions (DPOAEs). The technique shows reasonable repeatability and individual uniqueness, offering a non-invasive approach for auditory research.

Area of Science:

  • Audiology
  • Bioacoustics
  • Biomedical Engineering

Background:

  • Estimating the bone conduction transfer function is crucial for understanding auditory mechanics.
  • Distortion product otoacoustic emissions (DPOAEs) offer a non-invasive measure of cochlear function.
  • Objective techniques are needed to complement subjective hearing tests.

Purpose of the Study:

  • To present and validate a novel technique for estimating the nonparametric bone conduction transfer function.
  • To assess the repeatability and individual specificity of the proposed method.
  • To explore the potential application of this technique in auditory research and animal models.

Main Methods:

  • Distortion product otoacoustic emissions (DPOAEs) were recorded from the ears of five normal-hearing adults.

Related Experiment Videos

  • Individual bone conduction transfer functions were estimated using the recorded DPOAEs.
  • Measurements were repeated across multiple dates to evaluate repeatability, and input force was also measured.

    • Main Results:

    • The developed technique yielded reasonably repeatable bone conduction transfer functions.
    • The estimated functions were unique to each individual, aligning with subjective expectations.
    • The method requires robust DPOAEs and can be time-consuming for broad frequency analysis.

    Conclusions:

    • The presented objective technique effectively estimates individual bone conduction transfer functions using DPOAEs.
    • This method offers a non-invasive approach for auditory research, requiring only passive cooperation.
    • Future adaptations may allow application in animal models for broader auditory system investigations.