一种提高哼唱匹配效果的新算法  

A new approach to improve the performance of query-by-humming

作　　者：罗凯[1] 魏维[1] 谢青松[1] 

机构地区：[1]解放军西安通信学院,西安710106

出　　处：《信息技术》2007年第7期71-73,77,共4页Information Technology

摘　　要：在基于改进离散余弦变换的哼唱检索系统中,采用音高轮廓表示旋律,取原始歌曲中的一段为哼唱片段,使用字符串匹配法,分别在采样率为8kHz和44.1kHz的情况下进行匹配,分析了分帧起始位置对匹配效果的影响,并就此问题提出新算法。实验结果表明了该算法的有效性。In the query- by- humming system based on MDCT, this paper adopts a pitch contour to represent the melody. The humming signal is from the original song. The results are achieved by using string matching approach in the sample rote of 8kHz and 44. lkHz. This paper analyzes the effects of the start position of a frame, and presents a novel algorithm. The experiment has demonstratod the performance of the method.

关 键 词：哼唱检索 改进离散余弦变换 旋律 音高轮廓 

分 类 号：TN912.3[电子电信—通信与信息系统]