translation.en: And in the audio world that's when the microphone gets too close to its sound source, and then it gets in this self-destructive loop that creates a very unpleasant sound.
translation.zh: 在音频的世界里， 当麦克风离它的 音源太近时， 它会产生自我消音的循环， 这会产生让人非常不舒服的声音。