Update LAB 2 (d52af4a5) · Commits · 袁通 / EE205 Signal And System LAB

LAB2/P2_5_a_1.m

+3 −1

Original line number	Diff line number	Diff line
		@@ -25,10 +25,12 @@ subplot(3, 1, 1), stem(nx, w1), set(get(gca, 'Title'), 'String', 'w_1[n]');
		subplot(3, 1, 2), stem(nx, w2), set(get(gca, 'Title'), 'String', 'w_2[n]');

		subplot(3, 1, 3)
		stem(nx, w3, 'm--s')
		hold on
		stem(nx, w3, 'm--s')
		stem(nx, w4, 'r--p')
		set(get(gca, 'Title'), 'String', 'w_3[n] & w_4[n]');
		legend('w_3[n]', 'w_4[n]', 'Location', 'southeast');


		saveas(gcf, "plots/P2_5_a_1_out.png");

+5 −14

Original line number	Diff line number	Diff line
		@@ -5,19 +5,9 @@ x2 = [0 1 0 0 0 0];
		x3 = [1 2 0 0 0 0];
		nx = 0:5;

		xe1 = [0 0 x1];
		xe2 = [0 0 x2];
		xe3 = [0 0 x3];

		w1 = x1;
		w2 = x2;
		w3 = x3;

		for i = 3:8
		w1(i-2) = xe1(i) - xe1(i-1) - xe1(i-2);
		w2(i-2) = xe2(i) - xe2(i-1) - xe2(i-2);
		w3(i-2) = xe3(i) - xe3(i-1) - xe3(i-2);
		end
		w1 = cos(x1);
		w2 = cos(x2);
		w3 = cos(x3);

		w4 = w1 + 2*w2;

		@@ -29,7 +19,8 @@ stem(nx, w3, 'm--s')
		hold on
		stem(nx, w4, 'r--p')
		set(get(gca, 'Title'), 'String', 'w_3[n] & w_4[n]');
		legend('w_3[n]', 'w_4[n]', 'Location', 'southeast');

		saveas(gcf, "plots/P2_5_a_1_out.png");
		saveas(gcf, "plots/P2_5_a_2_out.png");

		close;

+5 −12

Original line number	Diff line number	Diff line
		@@ -9,16 +9,9 @@ xe1 = [0 0 x1];
		xe2 = [0 0 x2];
		xe3 = [0 0 x3];

		w1 = x1;
		w2 = x2;
		w3 = x3;

		for i = 3:8
		w1(i-2) = xe1(i) - xe1(i-1) - xe1(i-2);
		w2(i-2) = xe2(i) - xe2(i-1) - xe2(i-2);
		w3(i-2) = xe3(i) - xe3(i-1) - xe3(i-2);
		end

		w1 = x1.*nx;
		w2 = x2.*nx;
		w3 = x3.*nx;
		w4 = w1 + 2*w2;

		subplot(3, 1, 1), stem(nx, w1), set(get(gca, 'Title'), 'String', 'w_1[n]');
		@@ -29,7 +22,7 @@ stem(nx, w3, 'm--s')
		hold on
		stem(nx, w4, 'r--p')
		set(get(gca, 'Title'), 'String', 'w_3[n] & w_4[n]');

		saveas(gcf, "plots/P2_5_a_1_out.png");
		legend('w_3[n]', 'w_4[n]', 'Location', 'southeast');
		saveas(gcf, "plots/P2_5_a_3_out.png");

		close;

+1 −0

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		% Same as Part(a)
		No newline at end of file

+1 −0

Original line number	Diff line number	Diff line
		% Same as Part(a)
		No newline at end of file