THE ANALYSIS OF SUBJECTIVE EVALUATIONS FOR HEARING AIDS

USING FUZZY MEASURE AND FUZZY INTEGRAL

Abstract

The important items of subjective estimations were investigated for hearing aid users.
In this study, data of subjective evaluations were gathered from 166 peoples who have used a hearing aid for more than six months. Four principal factors in the subjective evaluations were found by factor analysis. Their four factors were the factor regarding loudness and noise ({S'₁}), the factor regarding nature of sound and speech ({S'₂}), the factor regarding feeling of fullness of sound and speech ({S'₃}), and the factor regarding feeling of wear and so on ({S'₄, }).
The model of fuzzy measure and fuzzy integral was applied to the result in order to make a mathematical model, and fifteen fuzzy measures were evaluated. Moreover, the Shapley values of four factors by fifteen fuzzy measures were solved.
As a consequence, hearing aid users attach great importance to nature of sound and speech when they select their hearing aids.