[djrtaudy] Digital radio

Create a portion of the radio spectrum for digitally encoded broadcast radio.  How many channels can be packed into a frequency range?  How would it compare with the channel density of current analog radio broadcasting?

We are particularly interested in digitally encoded and compressed speech: talk radio.  Speech encodes ideas, debate.  The goal is to democratize radio broadcasting, allowing a great many more people and organizations to access it as broadcasters.  Over the air broadcast radio is appealing because it has a low barrier to entry for listeners: one does not need to purchase, and keep purchasing, internet service.

Text can be even more densely encoded than speech: text broadcast radio.  Humans can of course directly read text or listen to it read by a dictation engine.  However, intriguingly, machines can also read and act on broadcast text.