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SIMPLEExplained Simply · #16EP.224 · 24 s

Explained Simply #16: how do wireless earbuds talk to your phone?

Cover of the lesson: Explained Simply #16: how do wireless earbuds talk to your phone?Coming to YouTube soon
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// WHAT YOU WILL LEARN

Bluetooth is a tiny 2.4 GHz radio: the phone compresses the song into small packets that hop between 79 channels about 1,600 times a second, and each bud turns them back into sound.

// LESSON NOTES

How do earbuds hear your phone with no wire? 🎧📱

📡 Bluetooth = a tiny radio at 2.4 GHz (the same band as Wi-Fi).
📦 Your phone squeezes (compresses) the song into small packets.
🔀 The packets jump between 79 small radio channels to dodge noise from Wi-Fi and microwaves…
🤯 …about 1,600 jumps every second!
🔊 Each earbud's chip turns the packets back into sound.

Read the voiceover (transcript)
  1. How do earbuds hear your phone with no wire?
  2. Bluetooth! A tiny radio at two point four gigahertz.
  3. Your phone squeezes the song into small packets.
  4. They jump between channels to dodge the noise.
  5. How many jumps a second?
  6. About sixteen hundred!
  7. Each earbud turns them back into sound.
  8. Next: how a fridge makes cold. Follow for more!

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