c = load("cco.dat")
t = c(:,1)
x0 = c(:,3)
x1 = c(:,4)
y0 = interp1(t, x0, 0:0.01:45000, "spline")
y1 = interp1(t, x1, 0:0.01:45000, "spline")
y = [y0; y1]
z = 0.25 * y
wavwrite(z', 48000, 16, "c.wav")
