USB speaker: It is a speaker that directly inputs digital audio signals into the speaker from the USB port on the motherboard, and then processes the signals through the built-in D/A conversion circuit of the speaker before outputting. On the surface, the advantage of using USB speaker is that it can improve the sound quality, because the digital signal will not be disturbed in the transmission process and the signal purity is good, but the core of USB speaker is D/A conversion circuit, and its conversion accuracy has a great influence on the performance of the speaker.

First, how to use usb speakers. The steps are as follows:

1, USB speakers certainly have USB interfaces. Audio digital signal is input into the speaker through the interface connected by USB cable, and the audio digital signal is processed in the speaker through the conversion circuit to push the speaker or earphone to make sound.

2. The sound quality of the USB speaker is not very good because of its high CPU and the final exported sound will be automatically changed to the USB sound card of the speaker, and because of the speaker and the cavity of the speaker.

3. Some USB speakers are mainly connected to the computer, and the USB of the computer is connected to the power supply. Then the computer can play music and other sounds. However, if you need to use USB speakers when you go out, some USB speakers don't have lithium batteries.

4, audio generally has two wires, one power cord with a plug and the other with a headphone jack. The earphone interface of mobile phone is the audio output interface, and we can output audio through this standard earphone interface. If there is a 3.5mm connector on the stereo, just plug the other one into the earphone connector of the mobile phone after connecting the power supply.

5, using usb connection to get electricity (some with data flow function or charging function), will provide a line input port. Therefore, no matter what kind of input port is provided, as long as the corresponding cable is inserted into the 3.5 earphone hole of the mobile phone, the connection between the mobile phone and the audio can be realized.

6. Those with Bluetooth function can be connected to the mobile phone through Bluetooth, and those with sound card function can be connected to the computer through audio first, and then connected to the computer through the data cable of the mobile phone or Bluetooth to play sound through audio.