A new method for kurtosis maximization and source separation

Abstract : This paper introduces a new method to maximize kurtosis-based contrast functions. Such contrast functions appear in the problem of blind source separation of convolutively mixed sources: the corresponding methods recover the sources one by one using a deflation approach. The proposed maximization algorithm is based on the particular nature of the criterion. The method is similar in spirit to a gradient ascent method, but differs in the fact that a "reference" contrast function is considered at each line search. The convergence of the method to a stationary point of the criterion can be proved. The theoretical result is illustrated by simulation
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Marc Castella, Eric Moreau. A new method for kurtosis maximization and source separation. ICASSP 2010 : 35th International Conference on Acoustics, Speech, and Signal Processing , Mar 2010, Dallas, United States. pp.2670 - 2673, ⟨10.1109/ICASSP.2010.5496250 ⟩. ⟨hal-01308032⟩

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