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TP3_3: terminated.

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Diogo Cordeiro 2020-12-03 10:34:19 +00:00
parent ac25025add
commit 0dcd250ea0
1 changed files with 8 additions and 5 deletions
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13
TP3a/DiogoEliseu_TP3_3.m
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@ -11,11 +11,14 @@ N = length(sintetico);
FS = 8; FS = 8;
f = (0:N-1)/N*FS; f = (0:N-1)/N*FS;
T = 0.125;
t = (0:N-1)/N*T;
figure(1) figure(1)
subplot(2,2,1) subplot(2,2,1)
plot(f, sintetico); plot(t, sintetico);
title('sinal sintetico'); xlabel('t'), ylabel('x(t)'), title('sinal sintetico');
subplot(2,2,2) subplot(2,2,2)
DFT_Xa = fft(sintetico, N); DFT_Xa = fft(sintetico, N);
@ -27,11 +30,11 @@ low_pass_filter = ones(N,1);
low_pass_filter(81:177) = 0; % 2.5 H 5.5 low_pass_filter(81:177) = 0; % 2.5 H 5.5
DFT_Xa_filtered = DFT_Xa.*low_pass_filter; DFT_Xa_filtered = DFT_Xa.*low_pass_filter;
plot(f, abs(DFT_Xa_filtered)) plot(f, abs(DFT_Xa_filtered))
xlabel('\omega/\pi'), ylabel('|X(\omega)|'), title('DFT sintetico em [0, 2\pi] filtrada') xlabel('\omega/\pi'), ylabel('|Y(\omega)|'), title('DFT sintetico em [0, 2\pi] filtrada')
subplot(2,2,4) subplot(2,2,4)
plot(f, abs(ifft(DFT_Xa_filtered))); plot(t, abs(ifft(DFT_Xa_filtered)));
title('sinal sintetico filtrado'); xlabel('t'), ylabel('y(t)'), title('sinal sintetico filtrado');
function f = X(N, inicio, fim) function f = X(N, inicio, fim)