Time Signature Detection by Using a Multi Resolution Audio Similarity Matrix

Mikel Gainza, Dublin Institute of Technology
Eugene Coyle, Dublin Institute of Technology

Document Type Conference Paper

Audio Engineering Society Convention Paper presented at the 122nd. Convention 2007, May 5-8, Vienna, Austria.


A method that estimates the time signature of a piece of music is presented. The approach exploits the repetitative structure of most music, where the same musical bar is repeated in different parts of a piece. The method utilised a multi-resolution audio similarity matrix approach, which allows comparisons between longer audio segments (bars) by combining comparisons of shorter segments (fraction of a note). The time signature method only depends on musical structure, and does not depend on the presence of percussive instruments or strong musical accents.