Improving score to audio alignment: Percussion alignment and Precise Onset Estimation - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2004

Improving score to audio alignment: Percussion alignment and Precise Onset Estimation

Résumé

Score to audio alignment connects events in a score to points on the time axis of the performance audio signal. By using the score, it facilitates audio indexing. This paper presents some major improvements, particularly alignment of percussive sounds in polyphonic music in addition to harmonic notes and precise time-onset estimation. A detection algorithm for percussive sounds uses correlation with percussive sounds from a database, to detect template sounds, and finds new references in the performance corresponding to the template sound looked for. Then a local distance for percussive sound and harmonic notes is used by a dynamic time warping (DTW) algorithm to perform the alignment of all notes together. For precise time-onset estimation, different methods based on the energy of the note are applied on the frames given by the DTW alignment. To remedy for possible frame errors, an algorithm of tempo control is used to detect the notes which are found out of the local forward and backward tempi. The algorithm is evaluated on a reference database including classical, jazz improvisation and popular music. Results show a good reliability and precise time-onset estimation.
Fichier non déposé

Dates et versions

hal-01161189 , version 1 (05-01-2016)

Identifiants

  • HAL Id : hal-01161189 , version 1

Citer

Xavier Rodet, Joseph Escribe, Sébastien Durigon. Improving score to audio alignment: Percussion alignment and Precise Onset Estimation. ICMC, 2004, NA, France. pp.1-1. ⟨hal-01161189⟩
76 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More