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- W1806946484 abstract "In this paper, we discussed the separation of n sources from m linear mixtures when the underlying system is underdetermined, that is, when m > n. The underdetermined blind sources separation has two steps. In matrix-recovery step, we defined a characteristic of the signals as the durative-sparsity and proposed a novel approach called as a searching-and-averaging-based method in frequency domain. This approach tells us how to search some data points that are very close to the basis lines along the direction of basis vectors a j and how to use them to estimate the mixing matrix. In source-recovery step, we used Bofill and Zibulevsky's shortest-path algorithm. Finally, the separation results were obtained using their short-time Fourier transforms." @default.
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- W1806946484 date "2005-01-01" @default.
- W1806946484 modified "2023-10-18" @default.
- W1806946484 title "A Novel Approach for Underdetermined Blind Sources Separation in Frequency Domain" @default.
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- W1806946484 doi "https://doi.org/10.1007/11427445_79" @default.
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