 In order to set the magnitude bigger, we put FUNCPOLY(U_8).
This works just as an amplifier. The function is "y = 4x" so
that this multiplies the input by four. (If you make xM Over Sampling,
you need to have xM amplifier in here somwhere)
Let's open a monitor for TXTOUT(U_2) to see the final output.
We have pure 400Hz. The x4 over sampling has been made up!!
That's it for this class. How to make xM Over Sampling is (1) xM Interpolation,
(2) Low Pass Filter then (3) xM Amplifier. You can make the LPF having
xM gain to omit the amplifier.
You can also refer to "Basis of Down Sampling".
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