Abstract
A method for estimating and/or predicting the human psychological respones to the other different audio noise in the case of listening to an audio signal is proposed by using the fuzzy sets theory. Concretely, when the persons listening to an audio signal are exposed to the other external audio noise, the fuzzy relation between the sound pressure level of an audio signal and that of the other different audio noise is approximately given by the uni-variate membership function, the support of which is the signal to noise ratio.Next, a method for evaluating the psychological respones is proposed by using the concept of the fuzzy probability.Finally, the validity and the applicability of the proposed method are confirmed experimentally by applying it to the actually abserved data. The experimental results are good agreement with the theory.