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Hearing

Hearing

When we hear a sound, our nervous system is detecting sound waves—pressure waves of mechanical energy traveling through a medium. The frequency of the wave is perceived as pitch, while the amplitude is perceived as loudness.

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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

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Using trainable hearing aids to examine real-world preferred gain.

H Gustav Mueller¹, Benjamin W Y Hornsby, Jennifer E Weber

¹Department of Hearing and Speech Sciences, Vanderbilt University, Nashville, TN, USA. GoVandy@GusMueller.net

Journal of the American Academy of Audiology

|April 11, 2009

Summary

The initial gain setting significantly impacts preferred hearing aid gain in real-world use. Lower starting gain resulted in better loudness perception and satisfaction for hearing aid users.

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Area of Science:

Audiology
Hearing Science
Rehabilitation Engineering

Background:

Limited data exist on preferred hearing aid gain with modern features.
Few studies have investigated preferred gain in trainable hearing aids.

Purpose of the Study:

To assess real-world preferred hearing aid gain with modern trainable hearing aids.
To determine if initial programmed gain influences preferred gain outcomes.

Main Methods:

Crossover study with 22 experienced hearing aid users.
Participants used hearing aids with volume control (VC) set 6 dB above or below NAL-NL1 targets for 10-14 days each.
Participants adjusted gain via VC to their preferred level and completed loudness/satisfaction questionnaires.

Main Results:

Trained preferred gain significantly differed from NAL-NL1 targets for both starting conditions.
Initial programmed gain strongly influenced trained gain (mean difference ~9 dB, p < .001).
Lower starting gain (-6 dB) led to more appropriate loudness ratings and higher satisfaction.

Conclusions:

The initial programmed gain setting is a critical factor influencing real-world preferred hearing aid gain.
Trainable hearing aids allow users to adjust gain, but the starting point affects the final outcome.
Optimizing initial gain settings may improve user satisfaction and audibility.