Solving the Antisymmetry Problem Caused by Pitch Interval and Duration Ratio in Geometric Matching of Music

Journal of multimedia 10/2010; 5(5):522-527. DOI: 10.4304/jmm.5.5.522-527
Source: DBLP


Music representation with pitch interval and duration ratio can achieve invariance to transposition and tempo. However, altering the pitch or duration of a singlemusic note will cause an antisymmetry effect. This paper proposes an algorithm for computing a geometric measure between two music fragments represented with pitch interval and duration ratio, with the capability of detecting and reducing these effects to improve search effectiveness.Index Terms-content-based music retrieval, geometricmatching, pitch interval, duration ratio, antisymmetry effect

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