When novice composers create a combination of melodies and accompaniments in the early stages of composition, they require a high easiness and good flexibility. We define music sketches as a “combination of an accompaniment and a melody. ” Novices need assistance in making music sketches, however, automation approach increases easiness but decreases flexibility. In this paper, we have developed a system that can input natural melodies in real-time based on the accompaniments so that novice composers can easily make music sketches. Moreover, the system provides rhythm assistance for novice composers who cannot provide inputs in real-time. Finally, we evaluated the proposed system using a comparison experiment having four systems that differed based on the note-flexibility, which is the flexibility of the pitches and the rhythms. As a result, we proved that the proposed system is the best for novice composers because of its easiness and note-flexibility.

当新手作曲家在作曲的初期创建旋律和伴奏的组合时，他们要求高度的易用性和良好的灵活性。我们将音乐素描定义为“伴奏和旋律的结合”。新手在制作音乐素描时需要帮助，但是，自动化方法增加了简便性，但降低了灵活性。在本文中，我们开发了一种可以在伴奏的基础上实时输入自然旋律的系统，以便新手作曲家可以轻松制作音乐素描。此外，该系统为无法实时提供输入的新手作曲家提供节奏帮助。最后，我们使用比较实验对提出的系统进行了评估，该实验具有四个基于音符柔韧性（音高和节奏的柔韧性）不同的系统。结果是，