＜SCHOOL＞
The 10-m-high sound isolation wood can reduce noise by about 10 dB at 100 m width.
With reduction of 10 dB, people can think that noise was halved.
A wood has the work which changes an unpleasant noise into comfortable sound, such as chirping of the shake of the trees which rustle in a wind, little stream sound, and a little bird, at the same time it reduces noise.
And the sound isolation wood can make a feeling settle down also visually by green
Current situation
A maintenance man is proceeding a soundproof wood in the airport now. But it doesn’t complete. The reason is that we can’t get site.
Future effort
To service a soundproof wood solve noise problem. So subject is to acquire site.