Welcome to the new platform of Programmer's Heaven! We apologize for the inconvenience caused, if you visited us from a broken link of the previous version. The main reason to move to a new platform is to provide more effective and collaborative experience to you all. Please feel free to experience the new platform and use its exciting features. Contact us for any issue that you need to get clarified. We are more than happy to help you.
Okay so I am a C programmer who is now programming in MATLAB. For our first college asignment I have to plot 3 sinusoid graphs of 4000 Hz with 25 samples per period. I also have to start from -T. The thing is I have the code. The whole class has the code i just want to understand it better.
Things I don't understand in the code:
* what is the point of fs
*i dont get how 3 graphs result from this
the x1-x3 functions are defined by our teacher.
f = 22050; %frequency of sinusoids
T = 1/f; %period of sinusoids
fs = 20/T; %at least 20 samples per period
tt = -T:(1/fs):2*T; %3 cycles starts at a negative time equal to -T
x1 = 24*cos(2*pi*f*tt+8.8);
x2 = 20*cos(2*pi*f*tt+2);
x3 = x1+x2;
plot(tt, x1), grid on;
plot(tt, x2), grid on;
plot(tt, x3), grid on;
0 · ·