Clinical applications of loudness scaling
Abstract
Fitting rules used in auditory rehabilitation usually have their main focus on detection thresholds. In state-of-the-art nonlinear hearing aids supra-threshold measures of the ear are also important and some of this information can be derived from loudness scaling. In three studies we examined the added value of loudness scaling for clinical applications. In a first study we performed loudness scaling in a group of musicians with primarily normal hearing. We measured loudness scaling with two narrowband (750 Hz and 3 kHz) and a broadband signal and investigated the relation with audiometric threshold. In a second study we examined the difference between monaural and binaural loudness perception in a subgroup of musicians. Finally we examined the correlations between self-reported problems and measures obtained from loudness scaling in a different group of hearing impaired employees. Our ndings indicate that unaided loudness scaling may not be appropriate as a basis for prescription rules, but aided loudness scaling can be used successfully as a verification tool in the fine-tuning stage and to compare different outcomes.
References
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