Development of a music score production system on a pen-based computer by using auxiliary music data

在普通的音乐创作过程中，用户使用乐器通过反复试验来创作乐句。为了基于手写体音乐查询检索音乐表演中相似的乐句，我们提出用钢琴卷表示两个音乐数据，然后根据它们的重叠面积计算它们的相似度。在我们的实验中，使用由三个或更多手写音乐符号组成的查询，获得了70%以上的前3名检索准确率。其次，为了通过手写查询从数据库中检索任意部分的手写对象，我们提出了一种基于圆圈重叠面积的相似性度量方法，圆圈的位置和大小由手写笔画的位置和类别类型决定。我们使用一个包含1425笔画和30个手写查询的数据库来检验该方法的有效性。结果，前10名检索准确率达到97%。

In a common music composition process, a user composes a music phrase by a trial and error using a musical instrument. In order to retrieve similar music phrases in the musical performance based on a handwritten music query, we have proposed that the both music data are represented by piano rolls and then the similarity of them are calculated based on the overlap area of them. In our experiments, top-3 retrieval accuracy of 70% or more was obtained by using a query consisting of three or more handwritten musical symbols.Next, to retrieve an arbitrary part of handwritten objects from a database by a handwritten query, we have proposed a new similarity measure based on an overlap area of circles whose positions and sizes are determined by positions and category types of handwritten strokes. We examined the effectiveness of the method using a database of 1425 strokes and 30 handwritten queries. As a result, top-10 retrieval accuracy of 97% was obtained.