Geodesic
On the Quotient Function Employed in the Blind Source Separation Problem
Fractional calculus and applied analysis, Tome 13 (2010) no. 5, pp. 495-506.

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On the blind source separation problem, there is a method to use the quotient function of complex valued time-frequency informations of two ob-served signals. By studying the quotient function, we can estimate the number of sources under some assumptions. In our previous papers, we gave a mathematical formulation which is available for the sources with-out time delay. However, in general, we can not ignore the time delay. In this paper, we will reformulate our basic theorems related to the method of estimating the number of sources to be available for more general cases.
Keywords: Quotient Function, Cumulative Distribution Function, Blind Source Separation 
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Fujita, K. On the Quotient Function Employed in the Blind Source Separation Problem. Fractional calculus and applied analysis, Tome 13 (2010) no. 5, pp. 495-506. http://geodesic.mathdoc.fr/item/FCAA_2010_13_5_a3/