7.1 Linear-phase FIR transfer function It can be proven that the transfer function have a linear-phase, if its impulse response h(n) is either symmetric h(n)=(N-1-n),0≤n≤N-1 or is antisymmetrIC h(n)=-h(N-1-n),0≤n≤N-17.1 Linear-phase FIR transfer function It can be proven that the transfer function have a linear-phase, if its impulse response h(n) is either symmetric h n h N n n N ( ) = − −   − ( 1 , 0 1 ) or is antisymmetric h n h N n n N ( ) = − − −   − ( 1 , 0 1 )