Rfburns wrote:
Been listening to a little AM Broadcast Band “HD” radio and still
trying to figure out how iBiquity can tout it as CD quality.
Considering the fact that it takes about 40 kHz bandwidth to broadcast
all kinds of strange digital noises, odd warbling audio, dropouts and
interference issues, false “HD” detection and switching problems. No
CD system that I’ve heard sounds like that - even real cheap $15 ones.

I think that if manufacturers made better radios and broadcasters
would widen their AM signals you could achieve better and more
consistent quality with less bother. There’s just no reason to buy
one if you ask me.

What I find particularly amusing is stations transmitting infomercials
in iBiquity “HD” quality. Now that’s a real swell use of
spectrum.

The dubious claim is that HD makes FM sound like CD and AM sound like
FM. They both sound like XM on a bad day.