The Frequency Response Consider the lti discrete-time system with an impulse response hn shown below xIn Its input-output relationship in the time domain is given by the convolution sum yrm]=∑hkxm-k] Copyright C 2001, S K MitraCopyright © 2001, S. K. Mitra 9 • Consider the LTI discrete-time system with an impulse response {h[n]} shown below • Its input-output relationship in the time￾domain is given by the convolution sum The Frequency Response x[n] h[n] y[n]   =− = − k y[n] h[k]x[n k]