How does HD Radio Actually Work?
- Instead of sending out one analog signal, stations send out a bundled signal – both analog and digital. Because it is digital, textual data such as traffic, stock info and song titles can be sent out, as well. This is a great way to introduce artists to the masses. How many times have you heard a song you liked, but couldn't get the artist name? Problem solved.
- The digital signal layer is compressed for optimal delivery and sound quality.
- Both analog and digital signals are transmitted.
- Since they are not strictly controlled, radio signals bounce off objects, causing what is called multipath distortions. This is what causes the static in conventional radio receivers. HD Digital radio receivers are designed to sort through reflected signals, reducing static, hiss, pops and fades.
- The signals reach their destination. Both broadcasts are free, with no subscription fee. In order to hear the digital broadcast, all you need is an HD Radio receiver.
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