translation.en: I'm going to play you two clips of Usher, one which is normal and one which has almost no high frequencies, almost no low frequencies and not even that many mid frequencies.
translation.zh: 我会给大家播放两段Usher的音乐， 一段是正常的， 另一断几乎没有高频音，没有低频音， 甚至中频率音也没有多少。