The Widex fitting strategy for soft sounds involves keeping them above the client’s hearing threshold. This entails a very low compression threshold with the EDRC (Enhanced Dynamic Range Compression) known from Widex hearing aids since Senso Diva.
The general fitting strategy for soft sounds is a normalisation strategy aiming at matching the loudness perception of a normal-hearing person as closely as possible.
For normal speech levels, Widex aims at providing optimal speech intelligibility. This is achieved on the basis of an equalisation scheme where each frequency region is amplified sufficiently to make the speech cues audible to the user.
Gain is also optimised according to the ambient sound environment by the implementation of the Speech Enhancer, which optimises gain in regions with speech using the Speech Intelligibility Index (SII).
The general strategy for loud sounds is that they should be perceived as loud but not uncomfortably loud by the user. A normalisation strategy where a sound perceived as loud by a normal-hearing person will also sound loud to the hearing aid user is employed.