The Frequency Response Likewise, for a real impulse response h[n Hre(e/o)is even and him(e/o) is odd Example -Consider the M-point moving average filter with an impulse response given by mm=10,0≤n≤M-1 otherwise Its frequency response is then given by H(e0)=1∑e~0n Mn=0 Copyright C 2001, S K MitraCopyright © 2001, S. K. Mitra 17 The Frequency Response • Likewise, for a real impulse response h[n], is even and is odd • Example - Consider the M-point moving average filter with an impulse response given by • Its frequency response is then given by ( ) j re H e ( ) j Him e 0 otherwise 1 0 1 , / M,  n  M −    h[n] = =  − =  −  1 0 1 ( ) M n j n M j H e e