Back in 1999, a man in a van pulled up. “Wanna hear something cool?” Inside was a Digital Audio Broadcasting (DAB) receiver, demonstrating the fidelity of digital signals from an experimental transmitter in Toronto, including programming from my station, 102.1 the Edge/Toronto. It sounded great. Better than great, in fact.
Born out of a European research project in 1995, DAB promised static-free, CD-quality, better-than-FM audio. And it did. The new technology was also far more efficient, cramming more radio signals into the same bandwidth, something that was appealing to markets with AM and FM dials at maximum capacity. Its successor, DAB+, uses substantially less electricity than power-hungry AM and FM transmitters. The prediction was that it was just a matter of time before DAB replaced analogue AM and FM broadcasts. “Soon,” we were told. And then … nothing. At least in North America.
Source: How is HD Radio doing in Canada? It depends | Globalnews.ca