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kevhoffman
on Dec 12, 2012
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The hum that helps to fight crime
Perhaps you could use phase cancellation to eliminate the original 50Hz hum.
headShrinker
on Dec 13, 2012
[–]
This might leave ghosting of the original signal and would probably highlight any fluctuations inherent to "the main" that the phase cancellation would miss. I think this would probably be one of the cleaner and easier ways to proceed though.
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