요약2 |
In Korea, apartment housing is usually located near road continuously causing complaints from traffic noise and outdoor environment noise. Mainly, noise from outdoor is blocked by building facade such outer wall, windows and so on. Recently, the deletion of the balcony space results in falling the sound insulation performance. Accordingly, in order to isolate the noise, sound insulaton performance of windows are very important. In this research, 7 type of windows are investigated by sound insulation performance. And sound intensity measurement is performed to find the sound defect area of windows. |