Separating truth from fiction in open fittings. The popularity of open-fit hearing aids has increased dramatically, in large part due to digital features, feedback phase-inversion systems, and cosmetically appealing, instant-fit “slim” tubing. Although the magnitude of the effect is slightly less than with occluded shells or earmolds, open-fit devices equipped with directional microphones—contrary to popular belief—do provide improved speech recognition in noise compared to the unaided or omni-directional conditions.
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