食品与机械2012，Vol.28Issue(4)：131-133,258,4.DOI:10.3969/j.issn.1003-5788.2012.04.036
应用传递矩阵实现空压机消声器传声损失的测量
Sound transmission loss measurement of the muffler with the transfer matrix
摘要
Abstract
With two opposite raveling waves as the port parameters, the experimental measurement method of the transfer matrix of the muffler was researched, and the measurement model was established. A kind of expansion chamber muffler was designed and produced, the experimental measurement duct system was set up, the sound transfer matrix of the muffler from which the sound transmission loss can be calculated was identified, it was compared with the theoretical one and the results imply that the parameters of the transfer matrix of the muffler, which have the clear physical meaning, are the sound pressure transmission and reflection coefficients respectively; The sound transmission loss resulting from the sound transfer matrix is basically consistent with the theoretical calculation one and its measurement method is validated as well.关键词
传递矩阵/消声器/传声损失/管路/测量方法Key words
transfer matrix/ muffler/ duct/ sound transmission loss/ measurement method引用本文复制引用
冯涛,王晶,刘斌,李楠..应用传递矩阵实现空压机消声器传声损失的测量[J].食品与机械,2012,28(4):131-133,258,4.基金项目
国家自然科学基金(编号:10974217) （编号:10974217）
北京市教委科技发展面上项目(编号:科技教委2010-08新) （编号:科技教委2010-08新）
北京市属高等学校人才强教计划资助项目(编号:PHR201106110) （编号:PHR201106110）
