One such method, namely Blind Source Separation, is described below. [0028] Blind Source Separation refers to the separation of signals given only linear combinations of those signals, such that: x(t)=A s(t) [0029] where x(t) is a matrix of a set of observed signals (mixed signals), x1(t) . . . . xn(t), [0030] A is an unknown mixing matrix, [0031] and s(t) is a set of source signals s1(t) . . . sm