Independent Low-Rank Matrix Analysis Based on Time-Variant Sub-Gaussian Source Model

書誌事項

公開日
2018-11
資源種別
journal article
DOI
  • 10.23919/apsipa.2018.8659577
  • 10.48550/arxiv.1808.08056
公開者
IEEE

説明

Independent low-rank matrix analysis (ILRMA) is a fast and stable method for blind audio source separation. Conventional ILRMAs assume time-variant (super-)Gaussian source models, which can only represent signals that follow a super-Gaussian distribution. In this paper, we focus on ILRMA based on a generalized Gaussian distribution (GGD-ILRMA) and propose a new type of GGD-ILRMA that adopts a time-variant sub-Gaussian distribution for the source model. By using a new update scheme called generalized iterative projection for homogeneous source models, we obtain a convergence-guaranteed update rule for demixing spatial parameters. In the experimental evaluation, we show the versatility of the proposed method, i.e., the proposed time-variant sub-Gaussian source model can be applied to various types of source signal.

8 pages, 5 figures, To appear in the Proceedings of APSIPA ASC 2018

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