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Show transcribed image text The message m(t) has a Fourier transform with the following magnitude spectrum. This signal is applied to the following system, which can be used as a simple scrambler to enhance communication privacy. (Note: for all the sketches, the true magnitudes of the signals are not important. But you must label the "center" and "cutoff' frequencies of all signals on the frequency-axis in order to receive full credit!) sketch the magnitude spectra at points A, B, C, and D. Explain how this scrambler works. if y(t) is transmitted to a receiver, show how this system can also be used at the receiver to recover m(t) (i.e., unscrambling) by sketching the magnitude spectra at various points of the system.