為維護鄰室背景噪音干擾，活動隔牆須做適當隔音設計。但其構造、接合部位、材料或精度，導致隔音性能低於原設計。本研究以現場調查不同空間、整體構造、接合部位形狀與材料，量測隔音性能現況，另藉由實驗室測量活動隔牆隔音性能較佳之構造、接合部位形狀與材料。
本研究獲得以下結論：
一. 現場實測中，活動隔牆聲壓級較高皆發生於接合部位。板間、伸縮板之漏音可影響到整體隔音等級，又以伸縮板部分較為嚴重。整體隔音性能則鋼結構優於木結構，木結構無垂直接合機構直接音容易穿透；鋼結構則擁有鋁擠企口方式接合、垂直以「ㄇ」字形鋁擠接合。
二. 實驗探討縫隙影響測得「全密封」為STC(Sound Transmission Class) 41及正常使用狀態為STC 31。接合部位縫隙留設變因下與「全密封」STC等級差異為7，高頻頻率較為顯著，特別在5k Hz差異最大為28.2 dB。
三. 實驗量測36及90 mm木結構活動隔牆，其填充材與水平接合部形狀變因均無明顯差異；增加垂直接合機制可提升隔音等級，又以水平接合部面貼SBR(Styrene Butadiene Rubber)、垂直機制面貼EPDM(Ethylene Propylene Diene Monomer Rubber)更為顯著。
四. 實驗量測100 mm鋼結構標準板，填充遮音毯可以提升中低頻帶。增加伸縮板情況下，STC則降低8個等級，但表面材密度影響無顯著差異。

For avoiding the disturbance of background noise from the next door, movable partition was designed for insulation. Among the structure, joint part, material and accuracy could be one of factors caused the efficiency of insulation performance was lower than original designed. The study mainly investigated the insulation performance based on various spaces, structure, joint-part shape and material respectively. Besides, according to experimental measurement, the study also found the well insulation performance of structure, joint-part shape and material.

　　The study concluded the following results:

1. The study investigation was found that movable partition was higher sound pressure level in terms of joint-part zone.　The leaking sound between the two panels and telescopic sleeve panel affected total insulation sound, especially more notable by telescopic sleeve panel. The steel structure is higher efficiency than the wood one, since wood structure was not vertical-jointed part caused sound leaking, whereas steel structure with aluminum-jointed part which is "ㄇ”shape.
2. The study measured two conditions of slit effect, sealed condition was STC 41and unsealed condition was STC 31, the deviation between condition of seal and partial sealed was STC 7, which was more significant in the high frequency, especially the maximum deviation was 28.2 dB in 5k Hz.
3. There is no difference between 36mm and 90mm of wood structure and between filled material and horizontal- jointed shape. Enhancement of vertical-jointed part can improve the efficiency of insulation performance. The efficiency of vertical and horizontal-jointed parts were higher by sticking SBR and EPDM respectively.
4. Measuring the standard panel with 100 mm steel structure sticking rubber blanket can promote low and middle frequency. The STC level decreased 8 with telescopic sleeve panel condition. But there was no effect when alter the density of surface material.

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