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Alignment of Monophonic and Polyphonic Music to a Score

Type

text
 

Genre(s)

article
 

Forme(s)

document numérique
 

Cette ressource est disponible chez l'organisme suivant : Ircam - Centre Pompidou

Identification

Titre

Alignment of Monophonic and Polyphonic Music to a Score
 

Nom(s)

Orio, Nicola (auteur)
 
Schwarz, Diemo (auteur)
 

Publication

Havana, Cuba , 2001
 

Description

Sujet(s)

Alignment   Segmentation   Dynamic Time Warping   Polyphonic Alignment   Spectral Distance
 

Résumé

Music alignment is the association of events in a score with points in the time axis of an audio signal. The signal is thus segmented according to the events in the score. We propose a new methodology for automatic alignment based on dynamic time warping, where the spectral peak structure is used to compute the local distance, enhanced by a model of attacks and of silence. The methodology can cope with performances considered difficult to align, like polyphonic music, trills, fast sequences, or multi-instrument music. An optimisation of the representation of the alignment path makes the method applicable to long sound files, so that unit databases can be fully automatically segmented and labeled. On 708 sequences of synthesised music, we achieved an average offset of 25 ms and an error rate of 2.5%
 

Note(s)

Contribution au colloque ou congrès : International Computer Music Conference (ICMC)
 

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Date de la notice

2010-02-25 01:00:00
 

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