function flatSound
% written by CPF

Nsecs = 1; %number of seconds
delta_t = 1/4096;
t = 0:delta_t:(Nsecs-delta_t); 

Fs=4096; % sampling frequency
freq = 400 ; % frequency of the sound
A = 0.6;% amplitud of the sound (between 1 and -1 so it can be played by 'sound' function of Matlab
y = A*sin(2*pi*freq*t); % build the intensities over time
sound(y,Fs)
end