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Related Experiment Video

Updated: Sep 15, 2025

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
04:32

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention

Published on: December 20, 2024

438

Improved Speech Recognition in Adults With Conductive or Mixed Hearing Loss Using a Direct-to-Consumer

Thomas Hampton1,2,3,4, Mark Fletcher5, Alan Sanderson3,5,6

  • 1Department of Clinical Sciences, Liverpool School of Tropical Medicine, Pembroke Place, 160 Mount Pleasant, Liverpool, L3 5QA, United Kingdom, +44 7805098711.

JMIR Rehabilitation and Assistive Technologies
|July 15, 2025
PubMed
Summary

A new low-cost bone-conduction headset significantly improves speech recognition for individuals with conductive or mixed hearing loss. This self-fitted device offers a potential paradigm shift in hearing assistive technology, especially for underserved populations.

Keywords:
assistive technologyauditory perceptioncost efficienthealth interventionhealth resourceshearing aidshearing lossmedical devicemixed-methods studyotitis mediarehabilitationrehabilitation devicerehabilitation technologyspeech recognitionwearable electronic devices

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Area of Science:

  • Audiology
  • Biomedical Engineering
  • Public Health

Background:

  • Hearing loss impacts 20% of the global population, with 250 million affected by chronic suppurative otitis media.
  • Conventional hearing aids are challenging for individuals with ear discharge.
  • Assistive hearing technology is scarce in low-income settings due to cost and limited audiology services, reaching only 3% of those in need.

Purpose of the Study:

  • To evaluate the performance of a low-cost, self-fitted, direct-to-consumer bone-conduction headset.
  • To assess its efficacy and acceptability for individuals with conductive or mixed hearing loss.

Main Methods:

  • A multiple methods study was conducted with a purposive sample.
  • Participants underwent speech audiometry with and without the device.
  • Feedback interviews explored subjective impressions of the device's usability and aesthetics.

Main Results:

  • The device improved speech recognition by a median of 11% in participants with bone conduction thresholds <50 dB.
  • A larger air-bone gap correlated with greater improvement in speech perception.
  • Participants positively rated the device's weight, style, and ease of use, though aesthetics received mixed reviews.

Conclusions:

  • The low-cost bone-conduction device offers significant hearing benefits for adults with conductive or mixed hearing loss (bone conduction thresholds <50 dB HL).
  • This self-fitted technology could be a paradigm shift for hearing assistive devices in both high- and low-resource settings.
  • Further research is needed to establish real-world effectiveness and identify optimal candidates for this technology.