HD Sound

[Kriminal]

Heard an advert today for something (cant remember what it was) that is to be broadcast (on the radio) in HD sound....whats that then?

[SODDI]

It seems to be simply a brand name for digital radio:

http://en.wikipedia.org/wiki/HD_Radio

Which means, of course, that you'll have to buy a digital receiver. They may play a few tricks to enhance frequency response, but it will probably be about the quality of internet transmission - with the added bonus of the signal cutting in and out as you go in and out of range.