Zacharakis Asterios, Kaliakatsos-Papakostas Maximos, Kalaitzidou Stamatia, Cambouropoulos Emilios
School of Music Studies, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Front Psychol. 2021 Feb 22;12:603752. doi: 10.3389/fpsyg.2021.603752. eCollection 2021.
CHAMELEON is a computational melodic harmonization assistant. It can harmonize a given melody according to a number of independent harmonic idioms or blends between idioms based on principles of conceptual blending theory. Thus, the system is capable of offering a wealth of possible solutions and viewpoints for melodic harmonization. This study investigates how human creativity may be influenced by the use of CHAMELEON in a melodic harmonization task. Professional and novice music composers participated in an experiment where they were asked to harmonize two similar melodies under two different conditions: one with and one without computational support. A control group harmonized both melodies without computational assistance. The influence of the system was examined both behaviorally, by comparing metrics of user-experience, and in terms of the properties of the artifacts (i.e., pitch class distribution and number of chord types characterizing each harmonization) that were created between the two experimental conditions. Results suggest that appreciation of the system was expertise-dependent (i.e., novices appreciated the computational support more than professionals). At the same time, users seemed to adopt more explorative strategies as a result of interaction with CHAMELEON based on the fact that the harmonizations created this way were more complex, diverse, and unexpected in comparison to the ones of the control group.
变色龙是一种旋律和声计算辅助工具。它可以根据一些独立的和声风格或基于概念融合理论原则的风格之间的融合，为给定的旋律配和声。因此，该系统能够为旋律和声提供大量可能的解决方案和观点。本研究调查了在旋律和声任务中使用变色龙对人类创造力的影响。专业和新手音乐作曲家参与了一项实验，他们被要求在两种不同条件下为两首相似的旋律配和声：一种是有计算支持，另一种是没有计算支持。一个对照组在没有计算辅助的情况下为两首旋律配和声。通过比较用户体验指标，从行为上考察了该系统的影响，并根据在两种实验条件下创作的作品的属性（即音级分布和表征每种和声的和弦类型数量）进行考察。结果表明，对该系统的评价取决于专业知识（即新手比专业人士更欣赏计算支持）。同时，由于与变色龙的交互，用户似乎采取了更多探索性策略，基于这样一个事实，即与对照组相比，以这种方式创作的和声更加复杂、多样且出人意料。
