madmom-failure · lartillot2023-hardanger-fiddle-dataset

Hardanger fiddle music is particularly challenging in that respect: in some styles, bars are made of beats of unequal duration, and the duration ratio within successive bars is generally variable. In addition, the beat onsets are often not clearly accentuated, and computational beat trackers fail to predict the beat correctly. [...] The collected beat annotations have been used to test the latest available version 0.16.1 of the reference beat tracking software Madmom (Böck et al., 2016). For all the tunes, the predicted beat positions do not correspond to the annotated beats. Annotated and predicted beat onsets do coincide at isolated places, but because they do not extend along successive beat onsets, these coincidences cannot be considered as metrical convergence.