The following analogue signal consisting of three equal-strength sinusoids of fr

Question

The following analogue signal consisting of three equal-strength sinusoids of frequencies 3 Hz, 3.5 Hz and 4 Hz is sampled at a rate of 10 Hz. Plot the absolute values and powers of DFT for data length of 1 sec, 2 sec, 4 sec and 10 sec after applying hamming windows. x = cos(2*pi*t*3) + cos(2*pi*t*3.5) + cos(2*pi*t*4) Compare and comments on DFT power spectrum before and after applying hamming windows. Plot the absolute values and powers of DFT for R-R interval (seconds) data length (1321.5 seconds) after applying hamming window on the signals and Determine the most powerful frequency component in the signals.

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