来自《耶鲁大学开放课程：聆听音乐 第11集 第11集》

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  At this point, what he does is take that,
  在这个位置 他是这样处理的
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  that tonic pitch,
  用主音音高
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  and extend it for a long period of time.
  然后延长了很久的时间
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  And it's down in the bass; it's being held.
  来到了低音部分 延续着
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  This is a device that derives from organ technique
  这是从风琴技术衍生而来的方法
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  where an organist would just put his foot or her foot
  风琴师会把脚踏在
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  on a particular key[pedal] and just hold it for a long time
  特定的踏板上 并且保持很长时间
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  so we call it "Pedal point. "
  因此我们称之为持续音 [字面为踏板音]
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  So what Brahms is doing here is sort of extending
  所以勃拉姆斯在这所做的就是
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  this tonic harmony by means of a pedal point.
  通过持续音让主音和弦扩展
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  So let's listen to this,
  我们再来听听
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  but now we have got to repeat I believe
  好像又要复奏了