[LINK] New device puts music in your head — no headphones required

Tom Worthington tom.worthington at tomw.net.au
Tue Nov 17 08:48:54 AEDT 2020

On 15/11/20 11:41 am, Karl Auer wrote:

> ... Are you saying these guys
> have not invented what they say they have?

No they did not invent directional audible sound using ultrasonics.

	Pompei, F. J. (1999). The use of airborne ultrasonics for generating 
audible sound beams. Journal of the Audio Engineering Society, 47(9), 
726-731. http://www.aes.org/e-lib/browse.cfm?elib=12092

But it takes a lot of processing power and equipment to do and if the 
company can turn this into an affordable product, it will be impressive. 
Students at ANU have worked in the processing needed for phased array 
radar for the Australian and US military, which works on the same principle.

>>  ... participant would still be talking ...

Perhaps out of phase sound could be sent by the same system, so the 
speaker's voice would be muffled.

> It doesn't really generate sound in people's heads ...

Yes, hearing sounds from their fillings works differently (if it works 
at all).

Comedian and TV producer Lucille Ball claimed to have intercepted 
signals from Japanese spies in WWII through her fillings and reported it 
to the FBI.

Her company went on to produce the original series of Star Trek, so it 
is surprising Captain Kirk did not have a tooth mounted communicator. ;-)


Tom Worthington, MEd FHEA FACS CP IP3P http://www.tomw.net.au 
TomW Communications Pty Ltd. PO Box 13, Belconnen ACT 2617, Australia
Liability limited by a scheme approved under Prof. Standards Legislation

Honorary Lecturer, Computer Science, Australian National University 

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