I hope to show that aliasing occurs for more than one sinusoid

I want to show that aliasing occurs for more than one sinusoid, such as sample like this

x(t) = 3*cos(2*pi*300*t+pi/3) + 8*cos(2*pi*800*t-pi/5) at fs=500Hz

% fs means sample frequency

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truly thnx for kindness

Answer 1

[Les Beckham]

Perhaps you are looking for something like this?

t = 0:1/500:0.02;
x = 3*cos(2*pi*300*t+pi/3) + 8*cos(2*pi*800*t-pi/5);
plot(t,x)
t = 0:1/50000:0.02;
x = 3*cos(2*pi*300*t+pi/3) + 8*cos(2*pi*800*t-pi/5);
hold on
plot(t,x)
legend('sampled at 500 Hz - aliasing', 'sampled at 50 KHz')
title 'Sum of two sinusoids at 300 and 800 Hz'
grid on

[Changhyun Kim]

thxthx, i appreciate ur help

[Les Beckham]

You are welcome.