若:1*f2=S() 则:f1(m)(t)*f2(")( (m+n) 三奇异信号的卷积持性(6(其各阶寻数积) 1.f()*O()=f(t) f()*δ(t-to)=f(t-to) f(t-1)*(-t0)=f(t-to-t1): ( ) ( ) ( ) ( ) ( ) 2 ( ) 1 f t f t s t m n m  n 则   三.奇异信号的卷积特性 1. f (t)  (t)  f (t) ( ) ( ) ( ) 0 0 f t   t  t  f t  t ( ) ( ) ( ) 1 0 0 1 f t t  t t  f t t t . : ( ) 1 2 若 f  f  s t ( (t)及其各阶导数卷积)