Source Separation Contrasts Using a Reference Signal
Abdellah Adib, Éric Moreau, D. Aboutajdine · IEEE Signal Processing Letters · 2004
In this letter, we consider contrast functions, which are useful tools for the sources separation problem. We present new generalized contrasts by considering a so-called reference signal. In particular, this allows us to show that a criterion recently proposed in the literature is a contrast. Furthermore, a link with a joint-diagonalization criterion is also emphasized. Finally, we show that another classical contrast can also be extended by considering a reference signal.