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Convention Paper

Symmetry Model Based Key Finding

Authors: Mehnert, Markus; Gatzsche, Gabriel; Arndt, Daniel

AES Convention 126 · Paper 7660 · May 2009

Abstract

In this paper we introduce a new key finding algorithm that is based on the symmetry model introduced by Gatzsche et al. in [1], [2], [11]. The algorithm consists of two parts: First the most probable diatonic pitch class set of the musical piece is recognized. Second using one of the subspaces of the symmetry model the mode of the piece is estimated. The algorithm is evaluated with 100 Beatles songs, 90 newer Pop&Rock songs and 252 classical pieces from the Naxos database. The results will be compared to the algorithms of Lerch [3], Zhu et al. [4] and an algorithm based on binary major and minor chord profiles. The new algorithm has the highest overall key finding MIREX’05 score of 82,9 %.

Details

Published in
AES Convention 126
AES Convention
126
Paper number
7660
Publication date
May 6, 2009
Session subject
Audio for Games and Interactive Media
Affiliation
Technische Universität Ilmenau, Ilmenau, Germany; Fraunhofer Institute for Digital Media Technology, Ilmenau, Germany; Fraunhofer IIS, Ilmenau, Germany (See document for exact affiliation information.)
Type
Convention Paper