perfect fourth

短语

词形变化

perfect fourths 复数 perfect fourths

释义与例句

n.
  1. 1.

    A musical interval spanning four degrees of the diatonic scale. In the Western twelve-semitone system, it consists of five standard semitones.

    The perfect fourth has a pitch ratio close to 4:3.

词源

The word perfect refers to intervals that are neither major nor minor.

来源：wiktionary