The whole question please, please show working clearly,
especially for plotting phase the graphs.
The Whole Question Please Please Show Working Clearly Especially For Plotting Phase The Graphs 1 (44.43 KiB) Viewed 23 times
The Whole Question Please Please Show Working Clearly Especially For Plotting Phase The Graphs 2 (91.25 KiB) Viewed 23 times
4. (a) Find the frequency response of a system with impulse response given by t-1 h(t) = 4 rect Plot the amplitude response and the phase response with proper labelling. Is this a low-pass, high-pass, band-pass, or band-stop filter? Why? ) (13 Marks) (b) Consider the input signal x(t) that has the amplitude spectrum as shown in Figure 2. X 1 À (KHz) -4 0 4 Figure 2
EE2010 / IM2004 If x(t) is subject to ideal or impulse sampling with 6 KHz sampling rate, answer the following questions: (i) Sketch the resulted amplitude spectrum with proper labelling. Further identify the aliasing frequency ranges, if any. (ii) If an anti-aliasing filter is used to avoid aliasing, what is the cut-off frequency that the filter should be set for this case? Further sketch the resulted amplitude spectrum after sampling. (iii) If no anti-aliasing filter is to be used, what is the minimum sampling rate that can prevent aliasing? (12 Marks)
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