The Idea is to implant quirurgically two small and thin metal disks in the skull near the ears, and fix them in the bone, under skin and muscles.
A powerful magnet might make them resonate, thus obtaining sound. Music sistems might use magnetos instead of speakers, pointed to where usually the head of the listener is.
Lots of tech and medical holes to fill in this one, but might be interesting to hear music in a silent room.-- noyola, Jul 25 2003 bone implant hearing aid http://www.rnid.org...on_hearing_aids.htmtransmission via titanium screw [FarmerJohn, Oct 21 2004] cochlear implant hearing aid http://www.wired.co...,1286,53298,00.htmltransmission via short range RF [FarmerJohn, Oct 21 2004] Bone Conduction Phone http://www.opentech...t/product_bone.html [phoenix, Oct 21 2004] here is the toothbrush version http://www.engadget...s-you-a-loud-mouth/ [jhomrighaus, Jul 02 2007] Similarish Integral_20earphones [MaxwellBuchanan, Jul 03 2007] Not long till we get comercials pumped straight into our brains.-- Armande Hammer, Jul 26 2003 I think this is baked. I think they can use EM waves to resonate your eardrum directly thru your skull. Or I might have just been really high and imagined that...-- DeathNinja, Jul 26 2003 hmmm interesting-- theadore, Jul 26 2003 along the lines of a bone-conducting hearing aid. what UB said.-- po, Jul 26 2003 Aaaaaurg! It's playing Stairway To Heaven again.-- 2 fries shy of a happy meal, Jul 26 2003 Excellent! It's playing Stairway to Heaven again.-- gnomethang, Jul 26 2003 I wear hearing aids and have a device connected to the TV that transmits the sound via a loop antenna so that I hear the sound in me haid even when the room is silent. Great for late night movies.-- stringstretcher, Oct 31 2003 There is a guy producing speakers that directly stimulate the hairs /receptors in the ear w/o vibrating the intervening air molecules. <Erm,> I think I read it in The New York Times Magazine a couple a years ago. He would aim the speakers at someone walking by in the mall and only that person could hear the sound and it sounded as if was being played right behind his head. It has been a couple of years so the details are fuzzy; the idea is both scary and attractive at the same time - wrt ads, spam and so on.
Zaach-- Grimjack, Jul 02 2007 they have a toothbrush version of this now.-- jhomrighaus, Jul 02 2007 Similar idea - see link-- MaxwellBuchanan, Jul 03 2007 random, halfbakery