Like it picks up a signal and processes it and from that I can hear music. But is it just the variation in frequency? And if so, then how do stations work?
In: Technology
There are two basic kinds. FM and AM radio. Those are Frequency Modulation and Amplitude modulation, but you’ve asked about music which means we’re talking about
Frequency Modulation.
Sound waves are wobbles in the air pressure. That’s it. The speakers that play your music are shaking like the surface of a drum, and they push the wobbles out into your room.
So for radio…. we wobble a frequency instead of wobbling a physical drum skin.
The radio is tuned to a frequency… say… 101.1FM (that’s just a number of wobbles per second), and then the broadcast radio wobbles the frequency between 101.0 and 101.2 and your radio picks up those wobbles and makes your speakers wobble the same way.
Boom. Sound.
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