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Reference thresholds for EARTONE 3A insert earphones.

T Poulsen1

  • 1Acoustics Laboratory, Technical University of Denmark, Lyngby.

Scandinavian Audiology
|January 1, 1991
PubMed
Summary
This summary is machine-generated.

This study compared Eartone 3A insert earphones with TDH 39 supra-aural earphones for hearing threshold measurements. Results indicate comparable accuracy between the two earphone types for audiological assessments.

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Area of Science:

  • Audiology
  • Hearing Science
  • Biomedical Engineering

Background:

  • Accurate hearing threshold determination is crucial for diagnosing hearing loss.
  • Standard supra-aural earphones (TDH 39) are widely used, but insert earphones offer potential advantages.
  • Evaluating new earphone technologies like the Eartone 3A is essential for advancing audiological practice.

Purpose of the Study:

  • To compare the accuracy of Eartone 3A insert earphones against traditional TDH 39 supra-aural earphones for hearing threshold measurements.
  • To assess the performance of Eartone 3A earphones using standardized measurement techniques.

Main Methods:

  • Hearing threshold levels were determined for 22 normal-hearing participants using both Eartone 3A insert earphones and TDH 39 supra-aural earphones.
  • Measurements were conducted using an acoustic coupler (IEC 126) and an occluded-ear simulator (IEC 711) to obtain Sound Pressure Level (SPL) values.

Main Results:

  • Sound Pressure Level (SPL) values were recorded for both earphone types under standardized conditions.
  • The study provides comparative data on the acoustic output of Eartone 3A and TDH 39 earphones.

Conclusions:

  • Eartone 3A insert earphones demonstrate comparable performance to TDH 39 supra-aural earphones in hearing threshold measurements.
  • These findings support the potential use of Eartone 3A earphones in clinical audiology for reliable hearing assessments.