Hearing Aids and Further Hearing Loss? Part V

Predicted PTS (Permanent Threshold Shift) From Hearing Aid Use Various researchers have utilized data from TTS (Temporary Threshold Shift) and ITTS (Integrated Temporary Threshold Shift) in formulae that have included the length of time worn during the day, number of years worn, age at which the aid was first worn, the gain level used, and…

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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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