2. Windows and Zero Padding. Download the file HW6Problem2.mat from CANVAS. The file has a signal x and sampling frequency fs. The signal contains two sinusoids with frequencies in the range of 190 -210 Hz and some noise. You will analyze the signal in multiple ways and try to determine the two frequencies as accurately as possible. Make all plots on 1 figure using the subplot command. a) Plot the fft of the signal using a rectangular window and no zero padding. This basically means X=fft (x). Make your plot range from 190 – 210 Hz. b) Plot the fft of the signal using a rectangular window and zero padding to make the fft have a length of 4096. This means X=fft (x, 4096). Make your plot range from 190-210 Hz. Hint you will need a new frequency vector. c) Plot the fft of the signal using a Hanning window and no zero padding. This basically means X=fft (x.*hanning (length(x)). Make your plot range from 190 – 210 Hz. d) Plot the fft of the signal using a Hanning window and zero padding to make the fft have a length of4096. Make your plot range from 190-210 Hz. e) What is your best estimate of the frequencies of the two signals? f) Which plot was above was the most helpful in identifying the two frequencies? Why?