频域微分运算 pe= d dt ans+ansm+ta,s+ah =(6s”+bns-++bs+b) h= b,s”+b,s++b3+b。st st st r st r st e se p e s e dt d pe = = = 频域微分运算 ( ) ( ) 1 0 1 1 1 0 1 1 b s b s b s b a s a s a s a h n n n n m m m m = + + + + + + + + - - - - L L 1 0 1 1 1 0 1 1 a s a s a s a b s b s b s b h m m m m n n n n + + + + + + + + = - - - - L L