SURVEY OF SOUND ENVIRONMENT WHEN THE TRAIN PASSES OF NURSERY SCHOOLS LOCATED UNDER THE ELEVATED RAILWAY

In recent years, there has been a rise in the number of cases nursery schools located under the elevated railway. To clarify the reality, we conducted sound measurements of trains passes through several nursery schools located under the elevated railway. Result of sound pressure level when the train passes for nursery schools, 31.5 Hz ~ 63 Hz octave band frequency was differences between measurement results for each nursery school. Result of sound measurements of continuously for 4 ~ 8 hours in nursery rooms suggest that it is necessary to analyze by focusing on sound environment in nap time.