omega = zeros(12,1);
omega(1)  = 
omega(2)  = 
omega(3)  = 
omega(4)  = 
omega(5)  = 
omega(6)  = 
omega(7)  = 
omega(8)  = 
omega(9)  = 
omega(10) = 
omega(11) =  
omega(12) = 

c = zeros(12,1);
c(1)  = 
c(2)  = 
c(3)  = 
c(4)  = 
c(5)  = 
c(6)  = 
c(7)  = 
c(8)  = 
c(9)  = 
c(10) = 
c(11) = 
c(12) = 


t = 0:1/44100:5;
y = zeros(size(t));
for n=1:12
    y = y + c(n)*cos(omega(n)*2*pi*t);
end
y = y / max(abs(y));
wavwrite(y,44100,'e_xylophon');