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首页> 外文会议>Scantek, Inc.;National conference on noise control engineering;Institute of Noise Control Engineering of the USA >Acoustical Comparisons of Existing Facilities and New Facilities in a Special Education School
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Acoustical Comparisons of Existing Facilities and New Facilities in a Special Education School

机译：特殊教育学校现有设施与新设施的声学对比

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Comparisons of reverberation times, background noise levels and STC ratings between existing buildings on thecampus and newly constructed buildings will be presented for a school for students with special needs in centralFlorida. The project began with site visits and acoustical measurements with the design team on school days toobserve children with a variety of learning, physical and emotional disabilities in their learning environments.Acoustical ceiling tile and limited ceiling heights were used in the new classrooms to limit reverberation times toless than 0.6 seconds in middle frequencies. Existing classrooms had temporary walls built between them with manyopenings and doors with no acoustic seals. Effective NIC ratings measured were less than 40 in many cases. Thereare buffer spaces and full height masonry walls between adjoining classrooms in the new building with STC ratingsof 50 and above. Mechanical rooms were provided outside the classroom space for fan coil units with ductwork andsilencers to maintain sound levels of NC 30 inside the classrooms. Existing classrooms had through the wall heatpump units with NC levels above 45.
机译：校园中现有建筑物与新建建筑物之间的混响时间，背景噪声水平和STC等级的比较将针对佛罗里达州中部有特殊需要的学生进行。该项目从设计团队在上学日的现场访问和声学测量开始，以观察在学习环境中有各种学习，身体和情感障碍的儿童。在新教室中使用了隔音天花板和有限的天花板高度来限制混响时间在中频上不到0.6秒。现有的教室之间建有临时的墙壁，墙壁之间有许多开口和门，没有隔音密封。在许多情况下，测得的有效NIC额定值小于40。新建筑物的相邻教室之间的缓冲空间和全高的砌体墙的STC等级为50以上。在教室空间外设有机械室，用于带有风管和消音器的风机盘管单元，以保持教室内NC 30的声级。现有教室的壁挂式热泵机组的NC水平均高于45。

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