SHARE
TWEET

bagas ganteng

a guest Sep 19th, 2019 83 Never
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
  1. fs = 8000; %frequency sampling
  2. t = 0:1/fs:1; % time range
  3. x = 4*cos(2*pi*400*t)+4*cos(2*pi*900*t+0.5*pi)+5*cos(2*pi*400*t+0.25*pi); %signal x
  4. %H(z) = Y(z)/X(z) = (1 + 3 2*-2)/ (1 - 1/3 z*-1)
  5. b = [0.0201 0.0000 -0.0402 0.0000 0.0201 ]
  6. a = [1.0000 -2.1192 2.6952 -1.6924 0.6414 ]
  7.  
  8. y = filter(b,a,x); % filtering
  9. %fft sinyal awal
  10. Ak1=abs(fft(y))/length(x);
  11. k1=0:1:length(x)-1;
  12. f1=k1*fs/length(x);
  13. %fft sinyal setelah filter
  14. Ak2=abs(fft(y))/length(y);
  15. k2=0:1:length(y)-1;
  16. f2=k2*fs/length(y);
  17. %plot
  18. figure(1);
  19. subplot(2,1,1)
  20. plot(f1,Ak1)
  21. subplot (2,1,2)
  22. plot(f2,Ak2)
  23. figure(2);
  24. freqz(b,a,512,fs); %frekuensi respon filter
RAW Paste Data
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy. OK, I Understand
 
Top