What is 3D radio?

[plastic penguin]

It was mentioned on the BBC that a repeat radio programme can be heard in 3D (BBC Radio 4 IIRC). I always thought that 3D was visual and not an audible process.

 

[chebby]

It was mentioned on the BBC that a repeat radio programme can be heard in 3D (BBC Radio 4 IIRC). I always thought that 3D was visual and not an audible process.

http://www.bbc.co.uk/rd/blog/2014/10/tommies-in-3d