Iterative-Shift Cluster-Based Time-Frequency BSS for Fractional-Time-Delay Mixtures
Résumé
We recently proposed several time-frequency blind source separation methods applicable to attenuated and delayed mixtures. They were limited by heuristics and only processed integer-sample time shifts. In this paper, we propose and test improvements of these approaches based on modified clustering techniques for scale coefficients and a new iterative method to estimate possibly non-integer and large delays.