那覇市内で聞こえる音の種類が環境騒音のうるささの評価に及ぼす影響に関する研究

概要

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The sound level data is the most important datum among the appraised data of environmental noise. The object of this study is to clarify, by some experiments, that there would be a different response and that subjective appraisal differs when audible sound types change even under the same sound level. So far, various methods that we, appraise sound environment by our subjectivity, have been proposed and utilized. But we have seen few study cases about the correlation between sound types, subjective appraisal and moreover sound level. In this research, we have surveyed environmental noise in terms of data obtained by physical quantity (L^<Aeq>), and subjective appraisal and audible noise types, then examined the correlation between them. Consequently we could confirm that their audible sound types might influence noise level and subjective appraisal. Moreover as a result of the surveillance of noise environment along boulevards, commercial and residential areas, the type of sound heard in each area constitutes of the same ratios. In regards to the cause for the difference in relationship between noise measurement values and appraisal scaling for principal roads, commercial areas and residential areas, the possibility of the sound types (mainly the traffic sounds) influencing the relationship was indicated.
2002-12-30