ELi5 : How do Bluetooth earpieces work?

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For example how do you listen to music from your phone using bluetooth earpiece ?

In: Technology

2 Answers

Anonymous 0 Comments

Bluetooth uses radio waves to send bundles of information. When you connect the earbuds to your phone, your phone sends out packets of sound to your earbuds which are somehow encoded. This means any radio receiver listening to the right frequency could potentially pick up on them, but not be able to understand them.

One of the downsides to Bluetooth is that it doesn’t check if the information was received properly. If your buds miss out one of the packets, your phone doesn’t know. This means there’s just be a tiny gap or glitch in the sound. On the other hand, systems like WiFi talk back and forth to check everything has been received. If you were sending music over WiFi and a packet got missed out, the receiver would send a message back to your phone asking it to send it again. This makes WiFi more reliable, but Bluetooth is basically designed to be cheap and low power, making it easy to put on loads of devices.

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