Rhythm map: Extraction of unit rhythmic patterns and analysis of rhythmic structure from music acoustic signals

  • Authors:

  • Emiru Tsunoo;Nobutaka Ono;Shigeki Sagayama

  • Affiliations:

  • Graduate School of Information Science and Technology, The University of Tokyo, 7-3-1 Hongo, Bunkyou-ku, 113-8656, Japan;Graduate School of Information Science and Technology, The University of Tokyo, 7-3-1 Hongo, Bunkyou-ku, 113-8656, Japan;Graduate School of Information Science and Technology, The University of Tokyo, 7-3-1 Hongo, Bunkyou-ku, 113-8656, Japan

  • Venue:
  • ICASSP '09 Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing
  • Year:
  • 2009

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Abstract

This paper discusses an approach to extract constituent percussive bar-long patterns in a music piece given as acoustic signal and to analyze the music structure with a map of constituent rhythmic patterns. Possible applications include music genre classification, music information retrieval (MIR) and music modification such as replacing rhythmic patterns with others. We propose a mathematical method based on One-pass DP algorithm and k-means clustering to extract unit percussive rhythmic patterns. As the result of identifying and localization the unit patterns in the entire piece, we obtained a music structure in the form of a map of rhythmic patterns.