The sound level data is the most important datum among the appraisal data of environmental noise. However, to appraise diversified environment like that of the present times, a more detailed appraisal on environmental noise could be obtained by adding subjective appraisal to the physical noise level. The objective 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)), 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 principal roads, commercial and residential areas, the sound heard in each area constitutes of the same ratios. The data obtained by subjective appraisal on each area is almost the same. This fact indicates we might infer annoying response through its noise types.
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