A modified underdetermined blind source separation algorithm using competitive learning Yuhui Luo Jonathon Chambers 2134/5908 https://repository.lboro.ac.uk/articles/conference_contribution/A_modified_underdetermined_blind_source_separation_algorithm_using_competitive_learning/9553862 The problem of underdetermined blind source separation is addressed. An advanced classification method based upon competitive learning is proposed for automatically determining the number of active sources over the observation. Its introduction in underdetermined blind source separation successfully overcomes the drawback of an existing method, in which the goal of separating more sources than the number of available mixtures is achieved by exploiting the sparsity of the non-stationary sources in the time-frequency domain. Simulation studies are presented to support the proposed approach. 2010-02-04 17:27:35 untagged Mechanical Engineering not elsewhere classified