Segmenting music through the joint estimation of keys, chords and structural boundaries

Authors:
Johan Pauwels;Geoffroy Peeters
Affiliations:
STMS IRCAM-CNRS-UPMC, Paris, France;STMS IRCAM-CNRS-UPMC, Paris, France
Venue:
Proceedings of the 21st ACM international conference on Multimedia
Year:
2013

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Abstract

In this paper, we introduce a new approach to music structure segmentation that is based on the joint estimation of structural segments, keys and chords in one probabilistic framework. More precisely, the boundaries of a structure segment are determined by detecting key changes and by utilizing the difference in prior probability of chord transitions according to their position in a structural segment. In contrast to many of the recent approaches to structural segmentation, this system does not work with self-similarity matrices, although it has been designed to integrate this kind of approach into the framework at a later stage. However, just the current version of the system, using only the estimated harmony, is already producing encouraging results, especially with respect to the precise localization of the boundaries.