本文通过试验研究和理论分析研究了混凝土(空心)砖墙体的隔声性能。
In this paper, through the experimental study and theoretical analysis, sound isolation behavior of concrete hollow brick wall is studied.
试验研究结果表明：普通混凝土空心砖墙隔声性能较好，完全能达到粘土实心砖的水准。
The results of experimental study demonstrated that sound isolation behavior of normal concrete hollow brick wall is good and completely reaches the level of clay solid brick wall.
采用自制的试验装置对泡沫铝与实体铝复合结构的隔声性能作了研究。
The sound insulation property of aluminum foam(Al-foam) with composite structure was studied using a self-made equipment and sound detector.
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