Merge branch 'main' of... (43e21731) · Commits · 袁通 / EE205 Signal And System LAB

LAB5/lab5.m

+8 −8

Original line number	Diff line number	Diff line
		@@ -11,8 +11,8 @@ plot(w,Pxx);
		title('The power spectral density of the speech signal');
		xlabel('w');
		ylabel('Pxx');
		saveas(gcf, "plots/P5_1_out1.png");
		close;
		% saveas(gcf, "plots/P5_1_out1.png");
		% close;

		b=fir2(3000,w/(fs/2),sqrt(Pxx/max(Pxx)));
		[h,wh]=freqz(b,1,128);
		@@ -23,8 +23,8 @@ plot(w1,Pxx1);
		title('The power spectral density of the speech-shaped noise');
		xlabel('w1');
		ylabel('Pxx1');
		saveas(gcf, "plots/P5_1_out2.png");
		close;
		% saveas(gcf, "plots/P5_1_out2.png");
		% close;


		%5.2
		@@ -60,8 +60,8 @@ subplot(3,1,3);
		plot(envelop3);
		title('f_{cut}=300 Hz');
		xlim([0,6000]);
		saveas(gcf, "plots/P5_3_out1.png");
		close;
		% saveas(gcf, "plots/P5_3_out1.png");
		% close;

		figure(4);
		[b,a]=butter(2,200/(fs/2));
		@@ -77,5 +77,5 @@ subplot(2,1,2);
		plot(envelop);
		title('6th order');
		xlim([0,6000]);
		saveas(gcf, "plots/P5_3_out2.png");
		close;
		No newline at end of file
		% saveas(gcf, "plots/P5_3_out2.png");
		% close;
		No newline at end of file

+11.7 KiB (41.1 KiB)

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+10.5 KiB (33.7 KiB)

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