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Introduction to three current hearing aid fitting methods.

¹Department of Speech Pathology and Audiology, Kent State University, Ohio.

The American Journal of Otology

|January 1, 1991

Summary

This summary is machine-generated.

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The POGO and Berger hearing aid methods offer better speech clarity than the NAL method, based on the Articulation Index. These hearing aid prescription procedures differ in test frequencies and gain amounts.

Area of Science:

Audiology
Hearing Science
Speech-Language Pathology

Background:

Hearing aid fitting relies on prescription procedures to optimize audibility.
Commonly used methods in the US include POGO, Berger, and NAL.
These methods are based on modifications of the 1/2 gain rule.

Purpose of the Study:

To compare the effectiveness of three prevalent hearing aid prescription procedures.
To evaluate the gain-frequency response and speech intelligibility outcomes.
To identify differences in test frequencies and prescribed gain levels.

Main Methods:

Summarized three hearing aid prescription procedures: POGO, Berger Method, and NAL Method.
Analyzed the gain portion based on a modification of the 1/2 gain rule.

Related Experiment Videos

Incorporated the speech spectrum into gain-frequency response formulas for Berger and NAL methods.

Main Results:

POGO and Berger methods utilize varying numbers of test frequencies compared to NAL.
The amount of gain prescribed differs across the three methods at various frequencies.
POGO and the Berger Method yielded a higher Articulation Index than the NAL Method for two representative threshold patterns.

Conclusions:

The POGO and Berger hearing aid prescription methods demonstrate superior performance in speech intelligibility.
Differences in methodology, including test frequencies and gain application, impact audiological outcomes.
These findings suggest POGO and Berger may be more effective for certain hearing loss configurations.