Open-fit hearing aids have been available for about three years. They are designed for people who have normal hearing in the low frequency range but have lost hearing in the upper range, where most conversational sounds are.
This is a very common type of hearing loss that often comes with aging or prolonged noise exposure.
"We found that the open-fit hearing aids with directional microphones on average gave wearers a 20 percent improvement in speech intelligibility in the restaurant setting compared to not having a hearing aid or wearing an open-fit aid without a directional microphone," said Valente.
"We are the first to show that a directional microphone in open-fit can provide improved performance in noise."
Moreover, the aids without directional microphones performed worse in the noisy situation than no aid at all.
"That's not unusual. People often tell me that when they are in a noisy situation, they take out their hearing aids because they don't help and sometimes even make it harder to hear," he added.
The study is published in the June issue of the International Journal of Audiology.
Source-ANI
RAS/L