The impulse response of the system in Fig. 1.is
and the input to the system is a periodic signal (with period T0 = 1) given by the equation
Fig. 1.(a) Determine the Fourier transform X(jω) of the input signal. Plot X(jω) over the range –6π<ω < 6 π.
(b) Determine the frequency response H(jω) of the system and plot |H(jω)| on the same graph as X(jω) for the case ωco = 5π.
(c) Use your plot in (b) to determine y(t), the output of the LTI system for the given input x(t) when the cutoff frequency is ωco = 5π.
(d) How would you choose ωco so that the output is a constant; i.e., y(t) = C for all t. What is the constant C ?
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