Beat tracking using group delay based onset detection
2008 (English)In: Proceedings of ISMIR - International Conference on Music Information Retrieval, ISMIR , 2008, 653-658 p.Conference paper (Refereed)
This paper introduces a novel approach to estimate onsets in musical signals based on the phase spectrum and specifically using the average of the group delay function. A frame-by-frame analysis of a music signal provides the evolution of group delay over time, referred to as phase slope function. Onsets are then detected simply by locating the positive zero-crossings of the phase slope function. The proposed approach is compared to an amplitude-based onset detection approach in the framework of a state-of-the-art system for beat tracking. On a data set of music with less percussive content, the beat tracking accuracy achieved by the system is improved by 82% when the suggested phase-based onset detection approach is used instead of the amplitudebased approach, while on a set of music with stronger percussive characteristics both onset detection approaches provide comparable results of accuracy.
Place, publisher, year, edition, pages
ISMIR , 2008. 653-658 p.
Beat tracking, group delay
Research subject Computer Science; Media Technology; Speech and Music Communication
IdentifiersURN: urn:nbn:se:kth:diva-193763OAI: oai:DiVA.org:kth-193763DiVA: diva2:1040355
ISMIR - International Conference on Music Information Retrieval
QC 201610312016-10-272016-10-102016-11-11Bibliographically approved