V2EX perfect fourth

Perfect Fourth

释义 Definition

(音乐)纯四度:一种音程,指两个音相隔四个音级(例如 C 到 F)。在十二平均律中通常为 5 个半音,被归类为“纯(perfect)”音程之一(与纯一度、纯五度、纯八度同类),因其协和度较高、在和声与旋律中非常常见。

发音 Pronunciation (IPA)

/pr.fkt frθ/(常见英式)
/p.fkt frθ/(常见美式)

例句 Examples

A perfect fourth from C is F.
从 C 开始的纯四度是 F。

The melody opens with a perfect fourth, creating a clear, stable sound before the harmony starts to shift.
旋律以一个纯四度开头,先营造出清晰稳定的听感,随后和声才开始变化。

词源 Etymology

perfect 源自拉丁语 perfectus(“完成的、完善的”),在音乐理论里用于指称被认为最“协和”、最稳定的一类音程(如纯四度、纯五度、纯八度)。fourth 来自古英语/日耳曼语系的序数词,表示“第四”。合在一起,perfect fourth 就是“属于‘纯’类的四度音程”。

相关词 Related Words

文学与著作 Literary Works

  • Johann Joseph Fux,《Gradus ad Parnassum》(《登帕纳索斯阶梯》,对位法经典著作)
  • Arnold Schoenberg,《Theory of Harmony》(《和声学》)
  • Walter Piston,《Harmony》(《和声》)
  • Mark Levine,《The Jazz Theory Book》(《爵士乐理书》)
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