matlab.rar_CRCcheck_matlab crc

fp=2000; fs=5000; a=(M-1)/2; Ap=2; As=42; fc=20000; wp=2*pi*fp/fc; ws=2*pi*fs/fc; wc=(ws-wp)/2; dw=(ws-wp); dp=((10^(Ap/20)-1)/(10^(Ap/20)+1)); ds=10^-(As/20); d=min(dp,ds); A=-20*log10(d); M=(6.2*pi)/dw wd1=hamming(M); disp('Coefficients of Hamming window are:'); disp(wd1); figure(1); freqz(wd1); title('Frequency response of Hamming window'); n=0:M-1; hd1=sin(wc*(n-a))/(pi*(n-a)) disp('desired filter coeffiients:'); disp(hd1); hn1=hd1*wd1; disp('filter coefficients of FIR filter:'); disp(hn1); figure(2); freqz(hn1); title('frequency response of th fir filter'); [N1,w1]=freqz(hn1); m1=abs(N1); figure(3) plot(w1/pi,m1); title('magnitude response'); n=0:M-1; wd2=(0.42-0.5*cos((2*pi*n)/(M-1))+0.8*cos((4*pi*n)/(M-1))); disp('Coefficients of Blackman window are:'); disp(wd2); figure(4); freqz(wd2); title('Frequency response of blackman window'); n=0:M-1; hd1=sin(wc*(n-a))/(pi*(n-a)) disp('desired filter coeffiients:'); disp(hd1); hn1=hd1*wd1; disp('filter coefficients of FIR filter:'); disp(hn1); figure(5); freqz(hn1); title('frequency response of th fir filter'); [N1,w1]=freqz(hn1); m1=abs(N1); figure(6) plot(w1/pi,m1); title('magnitude response'); wd2=bartlett(M); disp('Coefficients of triangle window are:'); disp(wd2); figure(7); freqz(wd2); title('Frequency response of triangle window'); n=0:M-1; hd1=sin(wc*(n-a))/(pi*(n-a)) disp('desired filter coeffiients:'); disp(hd1); hn1=hd1*wd1; disp('filter coefficients of FIR filter:'); disp(hn1); figure(8); freqz(hn1); title('frequency response of th fir filter'); [N1,w1]=freqz(hn1); m1=abs(N1); figure(9) plot(w1/pi,m1); title('magnitude response');