How do bluetooth headsets work?

The working principle of Bluetooth headset can be roughly divided into four steps:


1 The decoding chip in the mobile phone decodes music files such as MP3, Over Ear Wireless Headphones，and generates a digital signal that is sent to the Bluetooth headset through Bluetooth;


2 The Bluetooth headset receives digital signals and converts the analog signals that can be understood by human ears through the digital-to-analog conversion chip inside the Bluetooth headset;


3 To amplify the analog signal, you need to use the signal amplification chip inside the earphone;


4 The headphone unit receives the amplified signal and emits sound, and the ear hears the sound of music.


like：

How to wear ear-mounted bluetooth headset?

Can I use headphones if the surrounding sound is too loud?

How to Quickly Pair Over-Ear Bluetooth Headphones

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