The Frequency Response The function H(ejo)is called the magnitude response and the function 0(o) is called the phase response of the lti discrete-time system Design specifications for the lti discrete time system, in many applications, are given in terms of the magnitude response or the phase response or both 14 Copyright C 2001, S K MitraCopyright © 2001, S. K. Mitra 14 The Frequency Response • The function is called the magnitude response and the function is called the phase response of the LTI discrete-time system • Design specifications for the LTI discrete￾time system, in many applications, are given in terms of the magnitude response or the phase response or both ( ) j H e ()