a. Write a matlab code to design a chirp signal x (n) which has frequency starting at 700 Hz at 0 seconds and reaches 1.5kHz by end of 10^th second. Assume sampling frequency of 10kHz. Plot the spectrum of chirp signal in matlab. Observe the plot and comment on the range of peaks from the plot. b. Implement the following difference equation y (n) = x (n - 2) - 1.632*x (n) + x (n - 1) to filter the chirp signal. Compare the spectrum of input and output signal