And  well , normalizing. And I know everything. Uh , with the , nnn  when I develop this in s Taylor  Taylor series , I can't , um ,  calculate the mean and the variance  of the  for each of the Gaussian of the dictionary for the noisy speech. Now. And this is fixed.
Mm - hmm.
If I never do an estimat a newer estimation of the noise , this mean as  mean and the variance are fixed.
Mm - hmm.