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A hearing aid malfunction detection unit

R J Roeser, A Glorig, G M Gerken

The Journal of Speech and Hearing Disorders

|August 1, 1977

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The Hearing Aid Malfunction Detection Unit (HAMDU) is a small, low-cost device that periodically checks hearing aid functions like battery voltage and gain. It alerts users to malfunctions without requiring the hearing aid to be removed.

Area of Science:

Audiology
Biomedical Engineering
Medical Devices

Background:

Hearing aids are crucial for children with hearing loss.
Current methods for detecting hearing aid malfunctions can be inconvenient and infrequent.
Ensuring consistent hearing aid functionality is vital for auditory development.

Purpose of the Study:

To introduce a novel system for continuous, non-invasive monitoring of hearing aid operation.
To develop a device that can detect common hearing aid malfunctions in real-time.
To specifically address the needs of children using body-worn hearing aids.

Main Methods:

Development of the Hearing Aid Malfunction Detection Unit (HAMDU), a miniature, add-on device.
Periodic electrical checks (every half hour) of key hearing aid parameters: battery voltage, gain, distortion, noise, and receiver cord continuity.

Related Experiment Videos

Integration of a highly visible, electrically tripped indicator for malfunction alerts.

Main Results:

The HAMDU successfully performs periodic checks of multiple hearing aid functions.
The indicator reliably signals malfunctions, including when the hearing aid is turned off.
The device is small, low-cost, adaptable to body aids, and does not impact hearing aid performance.

Conclusions:

The HAMDU provides a practical and effective solution for monitoring hearing aid function in children.
Continuous, in-situ monitoring enhances the reliability of hearing aid use.
This system offers a significant improvement over traditional, periodic hearing aid checks.