Abstract
The purpose of this study is to obtain the judgement category curves on the frequency and teh vibration acceleraiton level of localized vibration to evaluate loudness and unpleasantness.In this experiment, the method of category judgement was used.Subjects judged the loudness and unpleasantness of each stimulus assigning a category number which seemed to reflect the loudness and unpleasantness.Experimental results of the relationship among the category range of the loudness and unpleasantness, teh frequency range from 25Hz to 800Hz and teh vibration acceleration level are given.The relationship between the ISO's curves of the vibration exposure giudelines for hand-arm transmitted vibration and teh category curves for loudness and unpleasantness is compared.
