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Background Noise

According to the ITU (see ITU-T P.861), background noise typically has a
"Hoth" spectrum:

D. Hoth, "Room noise spectra at subscriber's telephone locations", JASA V12
pp499-504 April 1941

Of course this was in the last centry, before the intrusion of mobile phones
etc.

Mike

--
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Mike Brookes, EEE Dept, Imperial College, London SW7 2BT, UK
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