现场吸声设计与分析.ppt

噪声与振动控制技术,主讲：盛美萍,Prof.Sheng MeipingNorthwestern Polytechnical University,西北工业大学精品课程专业核心课程,振动与噪声控制技术,本讲内容,Prof.Sheng MeipingNorthwestern Polytechnical University,现场吸声设计与分析,Prof.Sheng MeipingNorthwestern Polytechnical University,一、请估算：教室的吸声量,门、窗、墙、地面、顶部的吸声量计算满座、空座的吸声量计算,要点,吸声量,Prof.Sheng MeipingNorthwestern Polytechnical University,常用建筑材料的吸声特性,Prof.Sheng MeipingNorthwestern Polytechnical University,常用建筑材料的吸声特性,Prof.Sheng MeipingNorthwestern Polytechnical University,Prof.Sheng MeipingNorthwestern Polytechnical University,二、假设：现在教室内有一噪声源,假设测到室内噪声,Prof.Sheng MeipingNorthwestern Polytechnical University,三、请您采取吸声措施 目标：尽可能降低室内噪声，但不能改变房间基本功能,常用吸声材料的吸声特性,Prof.Sheng MeipingNorthwestern Polytechnical University,Prof.Sheng MeipingNorthwestern Polytechnical University,四、评价：吸声降噪量,降噪量,Prof.Sheng MeipingNorthwestern Polytechnical University,实验预告,混响时间 与 消声室性能测试,Prof.Sheng MeipingNorthwestern Polytechnical University,