perfect fourth
名词 n.
英文释义
名词 n.
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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.
词形变化
词源
The word perfect refers to intervals that are neither major nor minor.
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数据来源: Wiktionary