A method 1, wherein the coefficients of said adaptive filter V are adjusted by gradient methods or equivalent methods, based on the minimization of a cost function that measures {HEAD ~ a statistic dispersion} of {TAIL ~ said output signal} 
A method 1 , wherein the coefficients of said adaptive filter V are adjusted by gradient methods or equivalent methods , based on the minimization of a cost function that measures { HEAD ~ a statistic dispersion } of { TAIL ~ said output signal }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL