You import a video in the clipping block, and then there is an add audio under the video. You can add something.
Audio is a technical term, and the word audio is usually used to describe sound-related devices and their functions within the audio range. All sounds that humans can hear are called audio, which may include noise and so on. After the sound is recorded, whether it is sound, aria or musical instrument, it can be processed by digital music software or made into a CD. At this time, all the sounds have not changed, because CD is a kind of audio file. And audio is just the sound stored in the computer. If you have a computer and the corresponding sound card, that is, the sound card we often say, you can record all the sounds, and the acoustic characteristics of the sounds, such as sound level, can be stored in the form of computer hard disk files.