[LAD] A little quiz about audio measurements...

Ralf Mardorf ralf.mardorf at alice-dsl.net
Fri May 28 18:39:03 UTC 2010


Niels Mayer wrote:
> If the "close" has to do with induced or actual 50hz hum, perhaps
> frequency-doubled via rectification:

It's the residual ripple for the DC that comes with 100 Hz. 50 Hz hum is 
'send' by the transformer and could be heard as additive analog audio 
signal, because of the 'electric smog'.





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