A supervised approach to hierarchical metrical cycle tracking from audio music recordings

Srinivasamurthy, Ajay; Serra, Xavier

doi:http://dx.doi.org/10.1109/ICASSP.2014.6854598

A supervised approach to hierarchical metrical cycle tracking from audio music recordings

Citation

Srinivasasmurthy A, Serra X. A supervised approach to hierarchical metrical cycle tracking from audio music recordings. In: 2014 International Conference on Acoustics, Speech and Signal Processing (ICASSP); 2014 May 4-9; Florence, Italy. Piscataway, NJ: IEEE, 2014. p. 5237-5241. DOI 10.1109/ICASSP.2014.6854598

Abstract

A supervised approach to metrical cycle tracking from audio is presented,/nwith a main focus on tracking the tāḷa, the hierarchical cyclic/nmetrical structure in Carnatic music. Given the tāḷa of a piece, we aim/nto estimate the akṣara (lowest metrical pulse), the akṣara period, and/nthe sama (first pulse of the tāḷa cycle). Starting with percussion enhanced/naudio, we estimate the akṣara pulse period from a tempogram/ncomputed using an onset detection function. A novelty function is/ncomputed using a self similarity matrix constructed using frame level/naudio features. These are then used to estimate possible akṣara and/nsama candidates, followed by a candidate selection based on periodicity/nconstraints, which leads to the final estimates. The algorithm/nis tested on an annotated collection of 176 pieces spanning four different/ntāḷas. Though applied to Carnatic music, the framework presented/nis general and can be extended to other music cultures with/ncyclical metrical structures.