I need these two analysis answers related to the work below 1. (5 pts.) Estimate

Question

I need these two analysis answers related to the work below
1. (5 pts.) Estimate the frequency and average positive and negative peak amplitudes of each of four digital signals generated in Part 1. To estimate the peak amplitudes, it is suggested that you use a Data Cursor tool in the MATLAB figure window, which allows you to “measure” the data values in the plotted signal. To get a reliable estimate of the peak amplitudes, compute an average of peak amplitudes of several peaks. Measure both positive and negative peaks. Make sure to explicitly state how many peaks were used in the calculation. Organize these results in a table. The table must have a table number and the corresponding caption. You may want to use the time scope to display your signals and to make measurements. However, it is not required in this part of the assignment.      

2. (5 pts.) Does the fundamental frequency of the signal change as you change the sampling frequency? If so, at which sampling frequency (or frequencies) the signal is no longer 13 Hz? Does the average peak amplitude change as you change the sampling frequency? Identify the optimal sampling frequency for the given analog signal. Explain your answer. Your answer must address the issues of both frequency and amplitude.

Appendix: Part 1 Figures: Continuous Function 02 0.6 0.3 Time(eec) F123 Hz 02 0.6 1.4 1.6 Time(eec) F64 Hz 02 04 0.6 0.8 Time(eec) FB:30 Hz 02 0.6 Time(eec) Fe-8 Hz 02 0.4 0.8 1.4 Time(sac)

Explanation / Answer

In order to find the peak amplitude of the signals plotted by using data cursor just do this after running that code in plotted figure you will get an icon with shape ,+ just use that move your cursor to different points it will give you the amplitude at that instants

Answer for first part is simple just by clicking + button in figure plotted and by moving cursor to positive and negative peaks you will get what u need.

Part 2: yes the amplitude and frequency varies with sample frequency as output of natural sampling is ATs summation over X(f-nfs) that is normal amplitude becomes ATs after sampling.

optimal samplng frequency acordingto nyquist criteria is 2fm Hence 2fm is 26Hz

Part 2 for simplicity is yes both amplitude and frequency of discrete signal changes with sampling frequency reason is signal after sampling is ATs with X(f-nfs)

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