Global Expectation-Violation as Fitness Function in Evolutionary Composition

Global Expectation-Violation as Fitness Function in Evolutionary Composition
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全局期望违背作为进化组合中的适应度函数

DOI:
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发表时间:
2009
期刊:
EvoWorkshops
影响因子:
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通讯作者:
C. Fox
C. Fox
中科院分区:
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文献类型:
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作者:
Tim Murray Browne;C. Fox

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以前的共同实践时期风格的自动作曲方法——例如马尔可夫模型和上下文无关语法(CFG)——不能很好地表征音乐张力和释放的全局、上下文敏感结构。使用局部音乐期望违背作为张力的度量,我们展示了如何从源作品中提取全局张力结构并在适应度函数中使用。我们演示了在进化算法中使用这种适应度函数来完成高度受限的从预先确定的音乐片段中进行创作的任务。评估表明,自动创作的作品与经验丰富的作曲家创作的类似受约束的作品实际上没有区别。
Previous approaches to Common Practice Period style automated composition --- such as Markov models and Context-Free Grammars (CFGs) --- do not well characterise global, context-sensitive structure of musical tension and release. Using local musical expectation violation as a measure of tension, we show how global tension structure may be extracted from a source composition and used in a fitness function. We demonstrate the use of such a fitness function in an evolutionary algorithm for a highly constrained task of composition from pre-determined musical fragments. Evaluation shows an automated composition to be effectively indistinguishable from a similarly constrained composition by an experienced composer.
DOI: 10.1080/09540090902733756
发表时间: 2009-01-01
期刊: CONNECTION SCIENCE
影响因子: 5.3
作者:
Abdallah, Samer;Plumbley, Mark
通讯作者: Plumbley, Mark