Changhong Audio used three small speakers to sneak shots as follows:
1, turn on the Bluetooth stereo first, then turn on the mobile phone.
2. In the phone settings, turn on the Bluetooth function.
3. At this time, the mobile phone will automatically search for Bluetooth pairing devices.
4. The mobile phone has searched for the Bluetooth audio device. Click the discovered device.
5. If the pairing is successful, the stereo will pop, indicating that the pairing is successful.
6. You can control Bluetooth audio by playing the stored music on your mobile phone.
Audio refers to an audio system in which electrical devices are combined to produce sound. The development history of audio technology can be divided into four stages: electron tube, transistor, integrated circuit and field effect tube.