I think I got the right flair. I understand how the audio signal is transmitted but I am baffled how the radio can display a song title, artist etc to the screen. I’ve seen this on car stereos mostly but I assume other devices can do it.
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Each radio station gets a single frequency, which you tune into. But they aren’t actually just given a single frequency: they get all the nearby frequencies too. So for instance if you tune into 106.2, the broadcaster can actually use everything from 106.17 to 106.23. They put the music on one frequency — say, 106.20 — but they can use other frequencies for other things. So 106.17 carries the song title, artist, and so forth, 106.21 has a stereo track that the radio only cares about if you have surround sound, etc.
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