Amplitude modulation Code in Matlab

Program

fs=500;

fc=50;

t=[0:2*fs]/fs;

x=2*sin(2*pi*t);

y=ammod(x,fc,fs);

z=fft(y);

f=[0:length(z)-1];

subplot(2,2,1);

plot(t,x);

xlabel('time');

xlabel('Freequency');
ylabel('amplitude');
title('Input Waveform');

subplot(2,2,2);

plot(f,y);

ylabel('amplitude');

title('modulated waveform');

subplot(2,2,3);

plot(f,z);

xlabel('Freequency');

ylabel('amplitude');

title('spectrum diagram');x= ammod(y,fc,fs);

subplot(2,2,4);

plot(t,x);

xlabel('time);

ylabel('amplitude);

title('demodulated waveform)

Output waveforms