音乐检索新方法的研究与实现

A Music Retrieval Research and Implementation of New Methods

为获得更高的检索准确度,在主流检索系统架构的基础上,提出对音频信号处理流程的改进,包括采用改进的YIN算法提取基音序列;提出一种新颖的"小阁"基音后处理方法,实现对基音序列的规整化操作;设计了一种旋律轮廓的标记办法和模糊匹配方法,并定义了一种相似度的衡量体系,最后完成音乐检索原型系统的开发.实验结果表明,新的处理流程对于检索准确度的支持好于自相关函数、中值滤波和编辑距离匹配算法,实现了对传统基于内容音乐检索方法的改进.

A serial of improvements to implement music information retrieval is proposed,it extracts the pitch with a improved YIN algorithm.A new＂cabinet＂post-treatment is put forward to produce regular pitch sequence;a melody contour marker method and fuzzy matching method is designed;a similarity measure system to complete the retrieval is defined as well.Experiments show that the new process is an improvement of the traditional content-based music retrieval.