Matlab - Señales seno

Fs = 8000;                   % samples per second

dt = 1/Fs;                   % seconds per sample

StopTime = 0.25;             % seconds

t = (0:dt:StopTime-dt)';     % seconds

%%Sine wave:

Fc = 60;                     % hertz

x = cos(2*pi*Fc*t);

% Plot the signal versus time:

figure;

plot(t,x);

xlabel('time (in seconds)');

title('Signal versus Time');

zoom xon;