: Sampling rate f, = 30Hz O At a sampling rate of f,=30HZ, i.e. v(t) = vi(t) which you found in question "e)", find the expression the spectrum SRI(f) of

the reconstructed signal sei (t).(1.5 Marks) Using the inverse Fourier Transform, deduce the expression of the reconstructed signal se1(t)in time domain and compare it to the original signal s(t).(2 Marks) At sampling rate f, = 15HZ At a sampling rate of f-15HZ, i.e. v(t) = v2(t) which you found in question "f)", find the expression of the spectrum Sr2(f) of the reconstructed signal S2(t).(1.5 Marks) Using the inverse Fourier Transform, deduce the expression of Sr2(t) in time domain and(1.5 Marks)compare it to the original s(t). What is the undesired effect that occurred? Suggest a technique to eliminate this effect whilekeeping the same sampling frequency.(1 Mark)