参考文献: 吴大正,杨林耀,王松林,等.信号与线性系统分析(第4 北京:高等教育出版社,2005:153~154. 北京:高等教育出版社,2000:211~212. heConvolut ion Integral Gatefunct ion XI Yan2hua (Depart ment XianyangNormal College Xianyang712000 China)Abstract convolution integral gatefunction wit differentwidt heheight being hewidt gatefunction wit narrowwidt hetop being heabsol ute val ue hediffer2 ence gatefunction widt hebot tom being hesum gatefunction widt heconvol ution integral woidentical gatef unction being rigonometric heheight rigonometric unctionbeing hewidt gatefunction hebot tom hesum hewidt gatefunction. Key words :convol ution gatefunction rigonometric