4 Filter design using frequency sampling a Design a l ADesig
     4. Filter design using frequency sampling. (a) Design a l (ADesign a low pass filter with a cut-off frequency -/4. Generate the plots for the filter coefficients for filter lengths N-21 and N-41. (b) Design a low pass filter with a cut-off frequency 3T/8. Generate the plots for uency .-3m/8. Generate the plots for filter lengths N-21 and N-41. Turn in the rp Turn in the plots for all cases above and just the code for the last part.  
  
  Solution
low pass filter

