We want to figure out if the harmony is changing, and if it is changing whether it's changing at a regular or irregular rate.

一是判断和声是否发生了变化，二是如果发生了变化，和声的变化频率是规则还是不规则的。

耶鲁公开课 - 聆听音乐课程节选

By regular rate we mean that the amount of time that each chord holds is exactly the same; every chord holds for the same length of time.

如果变化频率规则，那么和声中每个和弦持续的时间长度是完全相同的;,每个和弦都持续同样长的时间。

耶鲁公开课 - 聆听音乐课程节选

So what's happened to the rate of harmonic change here?

所以说这里的和声变化率是怎样的？

耶鲁公开课 - 聆听音乐课程节选

So we'll focus on the bass and we'll try to sing the bass, and if we find that in singing the bass our voice is not changing, probably the harmony hasn't changed.

现在把我们的注意力放到低声部上，尽量唱出低声部，如果在唱的过程中我们觉得自己的声音没有变化，那和声就很有可能没有改变。

耶鲁公开课 - 聆听音乐课程节选

So here in the G Minor Symphony we feel as--oh, it's so full of tension, angst,anxiety, perhaps passion, it's driving somewhere, and one of the things that's driving it is its accelerating rate of harmonic change.

在G小调交响曲里我们能感觉到，哦，音乐中充满了紧张，揪心，焦虑，甚至激情，这些感情正在向某个方向涌去，吸引它们的力量之一就是不断加速的和声变化率。

耶鲁公开课 - 聆听音乐课程节选