Linear-Phase FIR Transfer Functions The corresponding frequency response is then given by H(e0)=e/+0{2h0cos(4o)+2h1]os(3o) +2h2]cos(20)+2h[3]cos(0)+h4 The quantity inside the braces is a real unction of 0, and can assume positive or negative values in the range0≤0)≤π Copyright C 2001, S K MitraCopyright © 2001, S. K. Mitra 7 Linear-Phase FIR Transfer Functions • The corresponding frequency response is then given by • The quantity inside the braces is a real function of w, and can assume positive or negative values in the range 0  w   ( ) {2 [0]cos(4 ) 2 [1]cos(3 ) 4 = w + w w − w H e e h h j j + 2h[2]cos(2w) + 2h[3]cos(w) + h[4]}