7.1 Linear-phase FIR transfer function sin[(r-n)o is odd-symmetry on t=n Let T=(N-1)/2, thus equation holds if h(n) is even-symmetry on n=(N-1)/2 In other words,h(n)=h(N-1-n),0≤n≤N-1 Similarly, if 6(@=-T/2-to, we can arrive at h(m)=-h(N-1-n)0≤n≤N-17.1 Linear-phase FIR transfer function