The whole shift to digital for radio is a bullshit exercise. Radio functionality does not in any way increase in some measurable way by going digital, digital does not degrade gracefully and analogue radio used hardly any spectrum at all to begin with. I really don't see why radios should need processors, it was a perfectly good medium that served a ton of people with limited access to technology the world over.
The only reason this got rammed through in my opinion is that it allowed for DRM to be imposed on radio.