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This paper is concerned with blind separation of convolutive mixtures of mutually independent signals. We consider the MISO extraction of one source signal based on the maximization of a contrast function (CF): a new, so-called "reference" CF is proposed, which is based on cross-statistics between the estimated output and a reference signal. The proposed CF is valid both for i.i.d. and non i.i.d. sources. It presents the advantage over other CFs to be a quadratic function, which makes itsdoi:10.1109/icassp.2004.1326349 dblp:conf/icassp/CastellaMP04 fatcat:zvumvciju5a4nmjz66sxf7q5nm