Because remember I said that, typically, when you hear a sentence you make --you manufacture in your mind gaps between the words.

你们记得我之前说过,通常来说,当你听到一个句子时,你会通过心理活动,在词与词之间创造出间隔

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And so, there is the distinction between fixed schedules versus ratios, variable schedules and ratio versus interval.

因此，在固定时程与变化时程之间,以及在比率与间隔之间，存在着一些区别。

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And this is extremely useful when it comes to filling in gaps in sounds.

当需要在声音中填入间隔时,自上而下加工是非常有效的

耶鲁公开课 - 心理学导论课程节选