利用特殊结构声墙进行声波干涉降噪的理论可行性研究  

Study on Theoretical Feasibility of Sound Wave Interference to Eliminate Noise by Using Sound Wall with Special Construction

作　　者：柯璇[1] 牛晓娟[1] 赵光欣[2] 

机构地区：[1]江汉大学物理与信息工程学院,湖北武汉430056 [2]武汉纺织大学理学院,湖北武汉430073

出　　处：《武汉科技学院学报》2010年第3期12-15,共4页Journal of Wuhan Institute of Science and Technology

基　　金：湖北省科技攻关计划项目(2005AA101C56);国家自然科学基金(40804038)

摘　　要：设计特殊结构声墙,让经其反射的声波在房屋内形成干涉场,利用声波的干涉相消原理,以达到消声的目的。本文研究这种方法在理论上的可行性,推导出了矩形矩阵结构声墙的声波干涉计算公式,并利用Matlab编程绘制了公式所对应的图形。通过分析得出结论:特殊结构的声墙能形成声波干涉场,在场内部分区域上降噪在理论上是可行的,这种干涉降噪方法能在某些方面成为主流吸音降噪方法的有益补充,同时也指出了这一方法的局限性。For the purpose of noise elimination,a sound wall of special construction is designed to let reflected sound wave form interference field inside the room by employing the destructive interference principle of sound wave.The paper studies on the theoretical feasibility about this method with deduced formula to calculate the wave interference of rectangle matrix sound wall and draw a corresponding graph by using the Matlab program.Analysis reaches the conclusion that it is feasible in theory to achieve noise elimination in part of the area inside the sound wave interference field formed by sound wall with special constructions.Meanwhile,however,despite some existing limitations of such a method,this method of noise elimination by interference can be partly complementary to current methods of sound absorption and noise elimination,

关 键 词：声波 矩形矩阵结构声墙 干涉 降噪 

分 类 号：O429[理学—声学]