The second way would be to remove unwanted noise from a person's surroundings.

第二个是从人周围移除掉不想要的噪音。

All new iPhones come with Audio Mix, which lets you remove background noise in your videos and focus on voice using the intensity slider, basically making it sound like you're recording in a sound booth.

所有新 iPhone 都带有 Audio Mix，可让您消除视频中的背景噪音并使用强度滑块专注于语音，基本上让您听起来像是在录音室中录音。