Ambient Noise Effect on Hearing – A Primer

The Effect of Ambient Noise on the Speech Reproduction of Hearing Aids For the hearing impaired, ambient noise is a greater hindrance to the intelligibility of speech than for those of normal hearing.  Fortunately, contemporary hearing aids incorporate a number of designs and algorithms to reduce the disturbing effects of noise.  Still, in the fitting…

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Hearing Aid Verification Using Functional Gain – Part II

Note:  This is a continuation of a previous blog: Hearing Aid Verification Using Functional Gain – Part I, which was last week’s blog.   Functional Gain in Hearing Aids   Functional Gain (FG) = Aided Threshold minus the Unaided Threshold (FG = A-U). Unaided thresholds are measured to tones presented through the loudspeaker(s). Various frequencies…

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