Blind signal separation of similar pitches and instruments in a noisy polyphonic domain

  • Authors:
  • Rory A. Lewis;Xin Zhang;Zbigniew W. Raś

  • Affiliations:
  • KDD Laboratory, University of North Carolina, Charlotte, NC;KDD Laboratory, University of North Carolina, Charlotte, NC;KDD Laboratory, University of North Carolina, Charlotte, NC

  • Venue:
  • ISMIS'06 Proceedings of the 16th international conference on Foundations of Intelligent Systems
  • Year:
  • 2006

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Abstract

In our continuing work on ”Blind Signal Separation” this paper focuses on extending our previous work [1] by creating a data set that can successfully perform blind separation of polyphonic signals containing similar instruments playing similar notes in a noisy environment. Upon isolating and subtracting the dominant signal from a base signal containing varying types and amounts of noise, even though we purposefully excluded any identical matches in the dataset, the signal separation system successfully built a resulting foreign set of synthesized sounds that the classifier correctly recognized. Herein, this paper presents a system that classifies and separates two harmonic signals with added noise. This novel methodology incorporates Knowledge Discovery, MPEG7-based segmentation and Inverse Fourier Transforms.