CONSTRUCTION OF EVALUATIONAL STANDARD FOR THE VOCAL NOISE LEVEL FROM CHILDREN PLAYINGIN NURSERY SCHOOLS

2016 Fiscal Year Final Research Report

• Project/Area Number: 15K12726
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Childhood science (childhood environment science)
• Research Institution: Hachinohe Institute of Technology
• Principal Investigator: HASHIMOTO NORIHISA 八戸工業大学, 大学院工学研究科, 教授 (90295957)
• Project Period (FY): 2015-04-01 – 2017-03-31
• Keywords: 保育園 / 子どもの声 / 騒音問題 / 測定調査 / 意識調査 / 協議システム / 地域共生

Outline of Final Research Achievements

At first a survey was conducted to gather data for an assessment of the vocal noise level from children playing in nursery schools. Ten nursery schools in Tokyo and Aomori prefecture were surveyed. The equivalent continuous noise level measured 10 m from the center of a group of children playing in the nursery school yard was about 62 dB when there were 10 individuals and 74 dB when there were 100 individuals. The frequency analysis of vocal noise from children indicated peaks of around 1000 Hz and 2000 Hz. The effectiveness of a noise barrier estimated using the above results was about 15 - 20 dB, which was considered to be sufficiently effective. Secondary, the questionnaire on the children playing noise for general citizens was carried out. The results show that the reason of opposition for the construction of nursery schools are only feeling of anxiety. Then finally, the discussion system between residents and nursery schools for symbiosis of the area was suggested.

Free Research Field

音環境工学