The evaluation of mixed source noises has been considered as an important and urgent problem to be solved for the environmental noise study. In order to contribute to this problem a series of the Simulated Domestic Living Room experiments were carried out both at the Institute of Sound and Vibration Research and Muroran Institute of Technology. In Experiment I (ISVR) and Experiment Ⅲ (Muroran) the dose-response relations of separately reproduced aircraft, railroad, and road traffic noises were investigated. Whereas in Experiment Ⅱ (ISVR) and Experiment Ⅳ, aircraft and road traffic noises were systematically combined and the dose-response relations of the mixed source noises were investigated. The findings are summarized as follows : ① The Simulated Domestic Living Room procedure is validated to a satisfactory extent through four independent experiments carried out in two different countries. ② L_<Aeq> is proven useful to the evaluation of annoyance due to the same noise source. It shows, however, a discrepancy in evaluating the annoyance due to different noise sources. Hence L_<Aeq> cannot be used as a unified scale to evaluate the environmental noises of combined sources. ③ Among six important proposals for the evaluation of combined noises, Dominant Source Model showed better agreement with the reported annoyance of the subjects. It also showed better applicability to the social survey data of community noises.
複合交通騒音の不快感の評価に関する研究(1)
kiyo36_rikou_pp129-153.pdf
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