半消声室是指以地板为反射面的消声室，是模拟半自由空间的房间。
本文分别在半消声室和普通房间进行有源消声实验。
Active noise control experiments were performed in both a semi-anechoic chamber and an ordinary room.
详细介绍汽车整车半消声室的设计方法、建设情况和鉴定结果。
The detail of the design, construction and the appraisement of the whole vehicle semi-anechoic chamber is introduced.
在半消声室中应用这套实验装置对声源进行了定向研究，并探讨了各种误差因素与定向精度的关系。
The bearing experiment of sound source is done with the set of experiment device in semianechoic room, the relation between bearing precision and all kinds of error factor is discussed.
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