9.2.2 Optimum versus Adaptive Filters 回想：5代表什么？ y(n,) Desired response x(n,) m,) x(n,) c,(n) c(n-1,6) (n) Input Input eln,() signal signal Eror Solve R(n)c,(n)=d(n) Adaptive algorithm (a) () Optimal filter Adaptive filter 9.2.2 Optimum versus Adaptive Filters 回想： 代表什么？ Optimal filter Adaptive filter