Computer audio is a kind of peripheral hardware of the computer. It can output computer sound by connecting the wire with the audio output interface of the sound card of the computer mainframe (there is also wireless audio connected through Bluetooth). Most of them are used to listen to music and watch videos. Computer speakers can be divided into 2.0 speakers, 2.1 speakers, 5.1 speakers and even 7.1 speakers according to the number of boxes.