Phase and Group Delays In this case, each component of the input will go through different phase delays when processed by a frequency-selective LTI discrete-time system Then, the output signal, in general, will not look like the input signal The signal delay now is defined using a different parameter Copyright C 2001, S K MitraCopyright © 2001, S. K. Mitra 4 Phase and Group Delays • In this case, each component of the input will go through different phase delays when processed by a frequency-selective LTI discrete-time system • Then, the output signal, in general, will not look like the input signal • The signal delay now is defined using a different parameter