The actual fluctuation of your voice isn't something that's taught, but what they teach you is how to pronounce the letters properly, and rules that go along with the letters.

你声音的起伏不是别人教的,但是他们教会你的是,字母的正确发音，以及这些诵读这些字母的规则。

普林斯顿公开课 - 人性课程节选

So there is about between 12-16 rules that are there if you learn them, just naturally your voice will take in fluctuation and intonations. So I had the opportunity to learn actually here in New Jersey from people.

大概有12至16条字母的发音规则,如果你学习了，那么很自然地你的声音,就会有起伏和音调,我当时正好有机会在新泽西学习这个。

普林斯顿公开课 - 人性课程节选