唐津市の都市騒音 (中小都市における都市騒音に関する調査研究-2,3-)

概要

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The levels of street noise in 132 places in Karatsu City were measured in order to determine the actual state of city noise.1) The mean noise levels in dB (A) of each area in the daytime and at night, classified according to the type of neighborhood were: Commercial (69 and 59dB)>industrial (60 and 53dB)>and residential (53 and 43dB).2) The mean noise levels in dB (A) of each area in the daytime and at night, classified according to width of road were: Over 10m wide (69 and 64dB)>5-10m wide (63 and 56dB)>3-5m wide (54 and 44dB)>and under 3m wide (46 and 42dB).3) There is a positive correlation between the street noise levels (LM) in dB (A) and the logarithm of the number of cars (N per hour). The correlation coefficient was r=0.89 and the regression of LM on log N was LM=17.7 log N+15.1.
日本衛生学会の論文