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Single-Channel Source Separation of Audio Signals Using Bark Scale Wavelet Packet Decomposition

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Abstract

We address the problem of blind source separation from a single channel audio source using a statistical model of the sources. We modify the Bark Scale aligned Wavelet Packet Decomposition, to acquire approximate-shiftability property. We allow oversampling in some decomposition nodes to equalize sampling rate in all terminal nodes. Statistical models are trained from samples of each source separately. The separation is performed using these models. The proposed psycho-acoustically motivated non-uniform filterbank structure reduces signal space dimension and simplifies training procedure of the statistical model. In our experiments we show that the proposed algorithm performs better when compared to a competing algorithm. We study the effect that different wavelet families have on the performance of the proposed signal analysis in the single-channel source separation task.

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Authors and Affiliations

  1. Department of Electrical Engineering, Technion—Israel Institute of Technology, Technion City, Haifa, 32000, Israel

    Yevgeni Litvin & Israel Cohen

Authors
  1. Yevgeni Litvin
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  2. Israel Cohen
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Corresponding author

Correspondence to Yevgeni Litvin.

Additional information

This work was supported by the Israel Science Foundation under Grant 1085/05 and by the European Commission under project Memories FP6-IST-035300.

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Litvin, Y., Cohen, I. Single-Channel Source Separation of Audio Signals Using Bark Scale Wavelet Packet Decomposition. J Sign Process Syst 65, 339–350 (2011). https://doi.org/10.1007/s11265-010-0510-9

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  • DOI: https://doi.org/10.1007/s11265-010-0510-9

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