[cbolton]

That's exactly what the parent comment described in the beautiful example where the AM noise is due to moving tree leafs affecting the intensity of transmitted light, and you can fix it by varying color, which means varying the frequency spectrum of the light.

[ikekkdcjkfke]

How does the radio follow the frequency modulations if the radio cannot "see" at a specific direction?

[cbolton]

In the example, the amplitude of the flashlight signal is distorted by the movement of the trees. The signal is never completely hidden. Not sure if that answers your question...