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Saturday, February 12 • 3:00pm - 8:00pm
Using true wireless earphones to support accurate audiometric tests in non-clinical settings – preliminary validation

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Hearing loss is an increasingly serious problem not only for the elderly but also for the young.To achieve timely identification and management, many internet-based or smartphone-based test systems were proposed. However, conducting accurate audiometric tests outside sound booths introduces several challenges, such as ambient noise and stimuli level control, and mitigation of human errors. This study presents an approach to support multiple hearing tests in non-clinical settings with acceptable accuracy by using wireless earphones. Firstly, both earphones and over-the-ear earmuffs were used simultaneously, the ambient noise was reduced by the cushions of earphone and by the earmuff. Secondly, each earphone was calibrated during manufacturing to ensure design specifications such as frequency responses and tolerance ranges were met. The relationship between dBFS and dBSPL corresponding to a 2cc coupler measurement system was stored in the Bluetooth chip, and a protocol was developed for the host device to retrieve the conversion data from the earphone. Thirdly, the host device can accurately control the level of test stimuli played by the earphones through the Audio/Video Remote Control Profile. Results indicate that the output level error can be less than 1.5 dB, and maximum difference between different earphones was less than 2 dB.

Speakers
TL

Tai lien Chiang, Bachelor

master degree student, Mackay Medical College
v clinical experience in Mackay Memorial Hospital as audiologist from audiology and vestibular assessment to cochlear implant mapping v trying to figure out how to efficiently promote hearing care information in Taiwan, especially to elders v I am now a master degree student who major... Read More →


Saturday February 12, 2022 3:00pm - 8:00pm CST
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Attendees (3)