Re: Does anyone know anything about "Modulation Depth"? (Philips PM5680)
The weighting is not applied to the chrominance signal as a whole, it is applied to its components. The weighting factors are
0.877 applied to (R' - Y')
and
0.493 applied to (B' - Y')
these weighted signals are then referred to as V & U respectively.
As to where these weightings would be applied, I am not sure, as I was only a humble TV repair person, and not a broadcast engineer, but I would suspect it was done inside your PM5680.
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Graham.
G3ZVT
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