clear all
%%
fc = 2; % indica fração da freq básica
Amp = 1; % amplitude for the beat
Freq = 500; % frequency
Dur = 5; % Duration
Samp = 48000; % sampling points
%% signal
Wave1 = Amp*sin((1:Dur*Samp)*2*pi*Freq/Samp);
Wave2 = Amp*sin((1:Dur*Samp)*2*pi*fc*Freq/Samp);
Beat = Wave1+Wave2;
%%
plot(Beat)
sound(Beat)