Several studies have found increases in syncopation within genres of twentieth-century popular music, but its evolution across the entire century has not been explored. In this study we use a new corpus of vocal melodies to examine trends in the use of syncopation. We find an increasing trend over the entire century. We also consider three ways of categorising syncopations into ‘strong’ and ‘weak’ forms, and find that the strong forms increase more rapidly and later in the century than the weak forms. We consider the implications of these trends and discuss further issues that are illuminated by our corpus.

中文翻译：

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二十世纪美国流行音乐切分音的演变

一些研究发现二十世纪流行音乐流派中切分音的增加，但它在整个世纪的演变尚未被探索。在这项研究中，我们使用新的声乐旋律语料库来研究切分音的使用趋势。我们发现整个世纪都有增加的趋势。我们还考虑了将切分音分为“强”和“弱”形式的三种方法，并发现强形式在本世纪比弱形式增长得更快、更晚。我们考虑这些趋势的影响，并讨论我们的语料库所阐明的进一步问题。