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KMID : 1195620220150020135
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Clinical and Experimental Otorhinolaryngology
2022 Volume.15 No. 2 p.135 ~ p.143
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Electroacoustic Evaluation of Smartphone-Based Hearing Aid Applications
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Nguyen Willy
Koo Mi-Seung
Lee Jun-Ho
Oh Seung-Ha
Park Moo-Kyun
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Abstract
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Objectives: This study evaluated the electroacoustic characteristics of smartphone-based hearing aid applications (apps).
Methods: We investigated hearing aid apps based on processing delay measurements, hearing instrument testing, simulated real ear measurements, and a head-and-torso simulator.
Results: Many apps exceeded the recommended level for processing delay. Hearing instrument testing showed the highest amplification characteristics and the best sound quality when a hearing aid was used, followed by the high-end apps and then the low-end apps. The simulated real ear measurements results showed that the high-end apps had a better ability to match the amplification targets than the low-end apps, but there was no consistent pattern among apps when controlling the output. Only a few apps could improve the signal-to-noise ratio in the head-and-torso simulator.
Conclusion: Most of the apps showed relatively poor electroacoustic performance in comparison with hearing aids. Generalizing access to hearing care through hearing aid apps induces a wide diversity of hearing performance with no fixed standard for reliability. However, we expect their overall quality to improve over the next few years.
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KEYWORD
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Hearing Aid Apps, Smartphone, Electroacoustic, Hearing Aids, Hearing Disability
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