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タイトル 保育室内の音環境を考える (2) : 音環境が聴力に及ぼす影響<教育科学>
Acoustic analysis of auditory environment in nursery room.
志村, 洋子 (SHIMURA, Yoko)
埼玉大学教育学部 (Faculty of Education, Saitama University)
藤井, 弘義 (Fujii, Hiroyoshi)
東洋大学理工学部 (Faculty of Science and Technology, Toyo University)
奥泉, 敦司 (OKUIZUMI, Atsushi)
東京立正短期大学 (Tokyo Rissho Junior College)
甲斐, 正夫 (KAI, Masao)
K. A. I (K・A・I)
汐見, 稔幸 (SHIOMI, Toshiyuki)
白梅学園大学 (Shiraume Gakuen University)
出版者 埼玉大学教育学部
出版年: 2014 - 2014
作成日: 2014-03-04
更新日: 2014-12-16
埼玉大学紀要. 教育学部 (Journal of Saitama University. Faculty of Education). Vol.63, No.1  (2014. ) ,p.59- 74
抄録 It has been recognized in Europe and the United States for quite some time now that the auditory environment plays an important role in the healthy growth of children during infancy. Therefore, in the auditory environment standards for nursery rooms in day-care centers and kindergartens, it is a requirement that acoustic absorption materials are used for the interior building materials and that acoustic performance inside the rooms including reverberation time is clearly indicated. However current Japanese standards for nursery rooms in day-care centers indicate area standards per child and for auditory standards, only sounds such as the level of external traffic noise are indicated.
This study aims to develop proper evaluation standards for the auditory environment of nursery rooms by investigating the activities of children with their nursery caretakers inside nursery rooms as well as conducting audiometric tests of the caretakers in order to clarify that nursery rooms in Japan have an auditory environment suitable to support the activities of children and caretakers.
The study methods are as follows. Based on the results of auditory environment measurements performed by us so far, the auditory characteristics of nursery rooms were processed from a resonance environment to a sound absorption environment. Changes in children's play styles inside nursery rooms, in children's methods of communication with their care-takers, and in how to provide care by the caretakers were investigated before and after the process. Furthermore, audiometric tests of the caretaker were conducted using an audiometer in order to discuss whether the results of the audiometric tests were suitable to evaluate the auditory environment of nursery rooms.
The results are as follows. As one of the examples, the measured resonance time inside a nursery room was 1.0 seconds at 1000Hz. The sound absorption process was provided with soundabsorption materials, reducing the resonance time to about 0.7 seconds. After this process, the children's screaming inside the nursery room reduced and the children tended to calm down. In the case of quarreling among children in particular, characteristics including smooth conflict resolution were observed. Next, the results of the audiometric threshold value of the caretakers measured using audiometers showed that an increase in auditory loss was clearly seen right after childcare, indicating the impacts of “noises” on audibility. After working in nursery rooms where the sound absorption process was in place, no tendency for a decrease in audibility was seen.
The results above revealed that measuring the auditory environment inside nursery rooms where children spend long periods of time everyday can be a clue to understanding the amount of noise that children and caretakers are exposed to and audiometric testing for care-takers can be used as a method to evaluate the auditory environment inside nursery rooms.
In the future, we would like to conduct audiometric tests in children using non-invasive methods such as an OAE screener.
Nursery rooms
Auditory environment
Ambient noise
Audibility threshold
資源タイプ text
ジャンル Departmental Bulletin Paper
著者版フラグ publisher
/ Public / 埼玉大学 / 教育学部
/ Public / ジャンル別 / 研究紀要 / 埼玉大学 / 教育学部紀要
/ Public / 主題別 / 総合領域 / 生活科学 / 生活科学一般