Simple FIR Digital Filters Corresponding frequency response is given J(0 /2 Sin(0/2) whose magnitude response is plotted below First-order Fir highpass filter 0.8 30.6 041 0.2 14 0.6 0.8 0/元 Copyright C 2001, S K MitraCopyright © 2001, S. K. Mitra 14 Simple FIR Digital Filters • Corresponding frequency response is given by whose magnitude response is plotted below ( ) sin( / 2) / 2 1 = w jw − jw H e j e 0 0.2 0.4 0.6 0.8 1 0 0.2 0.4 0.6 0.8 1 w/p Magnitude First-order FIR highpass filter