A MUSIC STRUCTURE INFERENCE ALGORITHM BASED ON MORPHOLOGICAL ANALYSIS

Gabriel Sargent (1) , Frédéric Bimbot (1) , Emmanuel Vincent (1)

1 METISS - Speech and sound data modeling and processing

Music structure refers to the description of the long term organization of a music piece through a sequence of structural segments. A structural segment can be defined by its structural borders (a start time, an end time) and a label reflecting the similarity of its music content compared to the other segments'. Its duration is typically around 16 s and more. This document presents the music structure estimation system submitted to MIREX's structural segmentation task in 2012. It is composed of three steps : feature extraction, structural border estimation and segment labeling. First, the system produces a sequence of chroma vectors expressed at the snap scale. This sequence is used to calculate a segmentation criterion based on a morphological model of the structural segments. The structural border estimation is performed by searching the segmentation with lowest cost, which combines this criterion and a regularity constraint. The segments are then labeled by clustering according to their similarity, through the minimization of an adaptive model selection criterion.

Mots clés: music structure; Music information retrieval; morphological model

Domaines: Son [cs.SD]; Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]; Recherche d'information [cs.IR]

Gabriel Sargent, Frédéric Bimbot, Emmanuel Vincent. A MUSIC STRUCTURE INFERENCE ALGORITHM BASED ON MORPHOLOGICAL ANALYSIS. The Music Information Retrieval Evaluation eXchange (MIREX), ISMIR 2012, Oct 2012, Porto, Portugal. ⟨hal-00727791v2⟩