BBC to trial new digital radio and expand DAB

The National Grid Wirless will use existing medium-wave technology to broadcast digital radio mondiale

The BBC will debut a new type of digital radio to the UK with a trial in Devon. Digital radio mondiale (DRM) uses the medium wave band and could offer higher quality radio over greater distances.

It differs from DAB (digital audio broadcasting) in that it uses MPEG4 as its codec, a more efficient compression technology than the MPG2 codec used by DAB.