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Related Concept Videos

Anatomy of the Ear01:16

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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Gain:
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Related Experiment Videos

Comparison: real and simulated ear insertion gain.

Patrícia Danieli Campos1, Maria Fernanda Capoani Garcia Mondelli, Debora Viviane Ferrari

  • 1Speech Therapy Department, Bauru Dentistry School, São Paulo University.

Brazilian Journal of Otorhinolaryngology
|October 28, 2011
PubMed
Summary

Hearing aid (HA) software programming simulation of insertion gain differs from real ear measurements. Real ear measures are crucial for accurate hearing aid verification.

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Area of Science:

  • Audiology
  • Hearing Science

Background:

  • Hearing aid (HA) software programming is a key step in fitting devices.
  • Simulated insertion gain from software may not accurately reflect real-world acoustic conditions.

Purpose of the Study:

  • To compare simulated insertion gain from HA software with real ear insertion gain measured via probe microphones.
  • To evaluate the accuracy of HA software simulations in audiological practice.

Main Methods:

  • A prospective study involving 62 patients with sensorineural hearing impairment.
  • 110 ears were assessed, comparing simulated insertion gain with real ear insertion gain.
  • Statistical analysis was performed to determine the correlation and differences between simulated and real ear measures.

Main Results:

  • Simulated insertion gain in HA software programming was consistently higher than real ear insertion gain.
  • Statistically significant differences were observed across various frequencies.
  • Patient age did not correlate with the discrepancies between simulated and real ear measurements.

Conclusions:

  • Real ear measurements are essential for accurate verification of hearing aid fittings.
  • Reliance solely on HA software simulations can lead to inaccurate gain prescriptions.