Auditory embironment of kindergarten and nursery school

首先，我们调查了幼儿园和幼儿园的听觉环境，分析了这些环境的质量。其次，我们调查了教师的噪声暴露量，找出幼儿和教师感觉良好的听觉环境模型。因此，这两个设施的L50范围为55dB至85dB，具体而言，幼儿园为65dB至85dB，幼儿园为60dB至75dB。但各有不同，一般幼儿园的听觉环境比幼儿园高5dB左右。两者中L_<MAX>的数量从75dB到100dB，我们认为这个水平非常高。噪声暴露L50范围集中在60dB ~ 90dB区域。具体来说，幼儿园从70dB到85dB，幼儿园从65dB到85dB。幼儿园的噪声暴露量略高于幼儿园。噪音的原因是婴儿的哭声，小孩子的尖叫声和玩具在硬地板上的碰撞声。教师的L50比两个设施的L50高5dB。从60dB到90dB的噪音暴露量与工厂的噪音相同，很明显，教师总是在这样的地方工作。这些结果表明，有许多设施担心混响声和听觉环境，并试图解决这一问题。教室不是一个舒适的听觉环境，不仅对老师来说，而且对小孩子来说。我们认为我们应该在建筑上采取措施，比如吸收混响声。因为在设施里待的时间变长了。

At first we investigated the auditory environment of Kindergarten and Nursery school to analyze the quality of these.Second we investigated the quantity of noise exposure of teachers to find out the auditory environment model in which little children and teachers feel good. As a result of these, a scope of L50 of both facilities is from 55dB to 85dB,concretely kindergartens is from 65dB to 85dB and nursery schools is from 60dB to 75dB.However each of them is different, in general the auditory environment of kindergarten is about 5dB higher than that of nursery school. The quantity of L_<MAX> in both is from 75dB to 100dB and we think that level is very high. The scope of L50 of noise exposure was concentrated in the area from 60dB to 90dB.Concretely kindergarten is from 70dB to 85dB and nursery school is from 65dB to 85dB.The quantity of kindergartens' noise exposure is a little higher than that of nursery school'. The reasons of the noise are the echo of the babies' crying, the little children's screaming and the toys' amashing on the hard floor. The L50 of teachers is 5dB higher than the L50 of both facilities. The quantity of noise exposure, from 60dB to 90dB is the same as the noise in a factory and it became clear that teachers are always working in such places.These results indicate that there are many facilities that worry about the reverberant sound and the auditory environment and are trying to solve that. The class room is not comfortable auditory environment not only for teachers but also for little children. We thougt we should take measures in architecture, for example absorbing the reverberant sound.because the time spent in facilities becomes long.