Quote:
Originally Posted by valiant50
This is the job of an audiologist.
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You definitely want to get an audiologist involved in the process, at least for the initial assessment of actual hearing loss and appropriate gain. Excessive gain may cause additional hearing loss, even though it "feels" right to the user.
As for the fitting of the hearing aid, make sure the the professional uses REM (Real Ear Measurement) technology. This technology uses 2 microphones to measure the sound just outside of the ear (being picked up by the microphone) and the sound in the inside of the ear canal (with the aid inserted).
One of the big problems with hearing aids are that they physically changes the resonant frequencies in the ear, which can unintentionally attenuate or excessively amplify certain frequencies.
One of the main benefits of digital hearing aids is that the aid can be adjusted in narrow frequency bands while inserted. Together with REM the fitting process is actually very simple and fully optimized.