Well, ok, a sideband describes a pattern of light and dark.
Thank you for explaining the pre-emphasis thing. Yes, I know how Dolby works, this helps!
But what about the deviation It defines brightness. How does it correspond to the pattern? Does it define the brightness of the whole pattern (frame) or for each sample? I suppose it should somehow act on separate samples to make certain parts darker or brighter.
Regarding 220%, here is a Sony picture. Here the luminance bandwidth goes from the carrier to the left, not from like 0.7% of the deviation.
