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Clinical trial of a digital hearing aid
S Arlinger1, E Billermark, M Oberg
1Department of Audiology, University Hospital, Linköping, Sweden. stig.arlinger@oto.liu.se
Scandinavian Audiology
|March 20, 1998
Summary
The Oticon DigiFocus hearing aid demonstrated superior performance in communication, speech clarity, and noise reduction compared to analog hearing aids. Most users preferred the new digital hearing aid for its overall sound quality.
Area of Science:
- Audiology
- Hearing Aid Technology
Background:
- Modern hearing aids aim to improve speech understanding and sound quality for individuals with hearing loss.
- Digital hearing aid technology offers potential advantages over traditional analog devices.
Purpose of the Study:
- To evaluate the clinical performance of the Oticon DigiFocus digital hearing aid.
- To compare the test aid against subjects' existing modern analog hearing aids.
Main Methods:
- A 1-month clinical trial involving 33 experienced analog hearing aid users.
- Subjective assessments using the Abbreviated Profile of Hearing Aid Benefit (APHAB) and Gothenburg Profile.
- Objective measures including speech recognition thresholds in noise.
Main Results:
- The Oticon DigiFocus showed significant benefits in ease of communication, speech in reverberation, and speech in noise.
- Higher sound quality ratings, particularly clearness, were reported for the test aid.
- Speech recognition thresholds in noise were significantly better at higher speech levels (75 dB).
Conclusions:
- The Oticon DigiFocus hearing aid offers significant advantages in audibility and sound quality compared to analog hearing aids.
- Overall sound quality is a key factor influencing user preference for hearing aid technology.
- The majority of participants preferred the new digital hearing aid over their own analog devices.