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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.
Gainza, M. & Coyle, E. Time signature detection by using a multi resolution audio similarity matrix. 122nd. Audio Engineering Society Convention, May 5-8, May 5-8, 2007, Vienna, Austria.
European Community under the Information Society Technologies (IST) programme of the 6th FP for RTD - project EASAIER contract IST- 033902