please help

sample it at 1000 samples per second and with a total length of 0.1 second. (1) Write a MATLAB program to quantize x(t) using a 4-bit bipolar quantizer to obtain the quantized signal x, assuming that the signal range to be from 5 to 5V; Plot the original signal and quantized signal; You need to plot these signals in one figure. ( 20 points). (2) Calculate the Fourier transform of the x(t) use two different number of Fourier coefficients: N1 = 64 and N2 = 2048. Plot one-sided amplitude and phase spectrum under each Fourier Transform result. Using the subplot function to plot all spectrum in one figure. ( 30 points) (3) Indicate the intrinsic frequency(s) in each Fourier Transform result; Identify the phase value in the intrinsic frequency(s); Are the value the same in N1=64 and N2 = 1024 cases? If not, why they are different. ( 10 points). sample it at 1000 samples per second and with a total length of 0.1 second. (1) Write a MATLAB program to quantize x(t) using a 4-bit bipolar quantizer to obtain the quantized signal x, assuming that the signal range to be from 5 to 5V; Plot the original signal and quantized signal; You need to plot these signals in one figure. ( 20 points). (2) Calculate the Fourier transform of the x(t) use two different number of Fourier coefficients: N1 = 64 and N2 = 2048. Plot one-sided amplitude and phase spectrum under each Fourier Transform result. Using the subplot function to plot all spectrum in one figure. ( 30 points) (3) Indicate the intrinsic frequency(s) in each Fourier Transform result; Identify the phase value in the intrinsic frequency(s); Are the value the same in N1=64 and N2 = 1024 cases? If not, why they are different. ( 10 points)