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9. The frequency response H(w) of a VSB filter is shown Fig.1 m(t)=a1cosw1t+a2cosw2 a) Find the VSB signal XvB (t) when b) Show that X() can be demodulated by a synchronous demodulators as shown in Fig. 2. I - a ast a XUSB (t) \H(w)| dz) cosuct A a af-a {LPF →→y(t) Fig. 2 Fig. 1