Relative pitch estimation of multiple instruments

Abstract

We present an algorithm based on probabilistic latent component analysis and employ it for relative pitch estimation of multiple instruments in polyphonic music. A multilayered positive deconvolution is performed concurrently on mixture constant-Q transforms to obtain a relative pitch track and timbral signature for each instrument. Initial experimental results on mixtures of two instruments are quite promising and show high levels of accuracy.

DOI: 10.1109/ICASSP.2009.4959583

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Calculation of a constant q spectral transform

  • J C Brown
  • 1991
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