posted on Apr, 21 2010 @ 07:32 PM
reply to post by sgrrsh26
First off, sound isn't radio, radio isn't sound. They're not related at all. In any way. So your earbuds aren't emitting radio frequencies, ever.
Music, speech and whatnot can have, on some players, audio frequency content up to the 20KHz range (some won't reach that), but they don't steadily
emit 20KHz. Your cite is for ultrasound, not radio waves, and is for a power density of 2 Watts per square cm. That's quite a bit, you won't be
getting that out of your earbuds, and if you did, you'd know it because you'd be deaf.
Yes, there are generally magnets in headsets. But static magnetic fields don't have any effect to amount to anything, unless you're in a field
density you'll never reach with an earbud, or even in an MRI machine. Time-varying magnetic fields do, but that's not the case here with the little
speaker magnets in the earbuds. You do catch a hair of time-varying mag fields from the coils in the earbuds, but again, it's minute.
So no, no radio waves there, yes, magnets, but not much of one, and not the sort of magnetic field that tends to cause issues, and millionths of the
field density to be worried about.