From 0dcd250ea069ef78dd17b93ba86bb7dfe293f903 Mon Sep 17 00:00:00 2001 From: Diogo Cordeiro Date: Thu, 3 Dec 2020 10:34:19 +0000 Subject: [PATCH] TP3_3: terminated. --- TP3a/DiogoEliseu_TP3_3.m | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/TP3a/DiogoEliseu_TP3_3.m b/TP3a/DiogoEliseu_TP3_3.m index 3926e1c..7ac9b90 100644 --- a/TP3a/DiogoEliseu_TP3_3.m +++ b/TP3a/DiogoEliseu_TP3_3.m @@ -11,11 +11,14 @@ N = length(sintetico); FS = 8; f = (0:N-1)/N*FS; +T = 0.125; +t = (0:N-1)/N*T; + figure(1) subplot(2,2,1) -plot(f, sintetico); -title('sinal sintetico'); +plot(t, sintetico); +xlabel('t'), ylabel('x(t)'), title('sinal sintetico'); subplot(2,2,2) 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 DFT_Xa_filtered = DFT_Xa.*low_pass_filter; 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) -plot(f, abs(ifft(DFT_Xa_filtered))); -title('sinal sintetico filtrado'); +plot(t, abs(ifft(DFT_Xa_filtered))); +xlabel('t'), ylabel('y(t)'), title('sinal sintetico filtrado'); function f = X(N, inicio, fim)