The Frequency Response H(e ), in general, is a complex function of o with a period 2 It can be expressed in terms of its real and Imaginary parts H(e10)=H12(e10)+jHmn(e0) or, in terms of its magnitude and phase, H(e)=h(elo)- f(0) where 0(o)=argH(eo) Copyright C 2001, S K MitraCopyright © 2001, S. K. Mitra 13 The Frequency Response • , in general, is a complex function of  with a period 2p • It can be expressed in terms of its real and imaginary parts or, in terms of its magnitude and phase, where ( ) j H e ( ) ( ) ( )    = + j im j re j H e H e j H e ( ) ( ) ( )     = j j j H e H e e ( ) arg ( )    = j H e