GUO Haiyan, YANG Zhen, ZHU Weiping, YE Lei. Single-channel Speech Separation by l0 Optimization Using Quasi-KLT Bases[J]. Chinese Journal of Electronics, 2012, 21(3): 535-540.
Citation: GUO Haiyan, YANG Zhen, ZHU Weiping, YE Lei. Single-channel Speech Separation by l0 Optimization Using Quasi-KLT Bases[J]. Chinese Journal of Electronics, 2012, 21(3): 535-540.

Single-channel Speech Separation by l0 Optimization Using Quasi-KLT Bases

  • Received Date: 2011-03-01
  • Rev Recd Date: 2011-05-01
  • Publish Date: 2012-07-25
  • This paper deals with single-channel speech separation. First, it is proved that when the sparse bases of the signal sources satisfy certain conditions, all the sources can be perfectly separated from a single mixture by l0 optimization. Then, a special case where the single mixture is generated by two independent speech sources is studied in more detail. It is revealed that the ideal quasi- KLT bases constructed from the original sources satisfy the sufficient conditions for perfect separation of mixed signals. Considering the fact that the ideal quasi-KLT bases cannot be obtained in practice, template-matching based quasi- KLT bases generated from the single mixture are also proposed to perform single-channel speech separation. Finally, simulation results demonstrating the effective performance of single-channel separation of two speech sources by l0 optimization using the template-matching based quasi-KLT bases are presented.
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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