Yeah , sure.
Right.
Mm - hmm. And for that , well , the goal is to obtain , um    est estimate a PDF for the noisy speech when we have a   a statistic for clean speech and for the noisy speech. Mmm ? And when w the way to obtain the PDF for the noisy speech is  well , we know this statistic and we know the noisy st well , we can apply first order of the vector st Taylor series of the  of the  of  well , the order that we want , increase the complexity of the problem.
Mm - hmm.