Acoustics in nursery institutions focused on children - Practical methodologies observing sound environment from children's view

This study aims to create sound environment as educational surroundings for children, and we research methodology of sound environmental observing from children's viewpoint. We observed how children interacting with sound environment in the kindergarten, and measured sound field that surrounded children. The characteristic of kindergarten sound was 1∼2kHz and low frequency range sound that accompanied with children's behavior, and almost noisy about over 70dB(L_Aeq,10m). And, we classified their activities into three types and these models showedthat the planning of sound environment design varied according to activity's aims. We alsomeasured acoustical characteristics focusing on the height of children's ears. It was suggestedthat interior design influenced sound environment that surrounded children and these tended to be different from adult.