Quote:
Originally Posted by old_tv_nut
if the average brightness is different, the average carrier frequency is different, and all the associated sidebands move to keep their same frequency distance from the average
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This I do understand. What I do not understand how these sidebands will be represented onscreen. The distance from the average is the same, but the absolute frequency is different. Unless a TV knows how to represent the picture in relation to the changing average I just don't get how the picture will look the same, but brigher, because absolute frequencies are different. And as you said before, frequencies in the sideband represent the pattern, then the pattern will change with a change in brightness. I guess I am missing some important info about obtaining the average frequency for any moment in time.