Well , that 's  I mean , that 's what differs from different  different tasks and different s uh , spectral subtraction methods.
Hmm !
I mean , if  if you have , uh , fair assurance that , uh , the noise is  is quite stationary , then the smartest thing to do is use as much data as possible to estimate the noise , get a much better estimate , and subtract it off.
Mm - hmm.