On 2010-05-28, at 11:39 AM, Ralf Mardorf wrote: > 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'.
The times I have measured the power line frequency to check it's effect or otherwise, I have not measured it as exactly 50.0hz (when I lived in the UK). Vrnc _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/listinfo/linux-audio-dev
