Homework 1 (a).m

# Homework 1 (a).m - z = round(abs(255(sin(x.^2 y.^2 figure...

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%Abdelhamid jnane %Homework # 1 clear all close all % exercise # 1 % figure #1 x = 0:0.01:2; y = 2*sin(2*pi*2*x); subplot(2,2,1) plot(x,y) xlabel('time') title('signal 2Hz sin') %figure # 2 x = 0:0.2:2 y = 2*sin(2*pi*2*x); subplot(2,2,2) stem(x,y) xlabel('time') title('samples signal') % figure # 3 x = 0:0.01:2; y = round(2*sin(2*pi*2*x)); subplot(2,2,3) plot(x,y) xlabel('time') title('signal discretized') %figure#4 x = 0:0.01:2; y = 2*sin(2*pi*2*x); subplot(2,2,4) plot(x,y,'g') xlabel('time') title('sampled and discretized signal') hold on x1 = 0:0.2:2; y1 = 2*sin(2*pi*2*x1); stem(x1,y1) hold off %exercise # 2 % figure # 1 clear all; [x y] = meshgrid(0:.01:8*pi);

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Unformatted text preview: z = round(abs(255*(sin(x.^2+y.^2)))); figure; imagesc(z) axis off %figure # 5 % signal with 1000 Hz sampling rate t=0:0.001:1 y=2*sin(2*pi*4*t); figure; subplot(2,2,1); plot(t,y); title('signal with 1000 Hz sample'); % with 100Hz sampling rate t=0:0.01:1 y=2*sin(2*pi*4*t); subplot(2,2,2); plot(t,y);title('signal with 100 Hz sample') % with 10Hz sampling rate t=0:0.1:1 y=2*sin(2*pi*4*t); subplot(2,2,3); plot(t,y);title('signal with 10 Hz sample') %signal with 5 Hz t=0:0.2:1 y=2*sin(2*pi*4*t); subplot(2,2,3); plot(t,y);title('signal with 10 Hz sample')...
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