Separation of musical notes with highly overlapping partials using phase and temporal constrained complex matrix factorization

Yi Ju Lin, Yu Lin Wang, Alvin W.Y. Su, Li Su

研究成果: Paper同行評審

摘要

In note separation of polyphonic music, how to separate the overlapping partials is an important and difficult problem. Fifths and octaves, as the most challenging ones, are, however, usually seen in many cases. Non-negative matrix factorization (NMF) employs the constraints of energy and harmonic ratio to tackle this problem. Recently, complex matrix factorization (CMF) is proposed by combining the phase information in source separation problem. However, temporal magnitude modulation is still serious in the situation of fifths and octaves, when CMF is applied. In this work, we investigate the temporal smoothness model based on CMF approach. The temporal ac-tivation coefficient of a preceding note is constrained when the succeeding notes appear. Compare to the unconstraint CMF, the magnitude modulation are greatly reduced in our computer simulation. Performance indices including sourceto- interference ratio (SIR), source-to-artifacts ratio (SAR), sourceto- distortion ratio (SDR), as well as modulation error ratio (MER) are given.

原文English
出版狀態Published - 2015
事件18th International Conference on Digital Audio Effects, DAFx 2015 - Trondheim, Norway
持續時間: 2015 十一月 302015 十二月 3

Other

Other18th International Conference on Digital Audio Effects, DAFx 2015
國家/地區Norway
城市Trondheim
期間15-11-3015-12-03

All Science Journal Classification (ASJC) codes

  • 電腦科學應用
  • 訊號處理
  • 聲學與超音波
  • 音樂

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