Mm - hmm. Mm - hmm.
So you can end up with some components in it that are affected by things that are seconds away. Uh , and if it 's a low  energy compo portion , you might actually hear some  funny things.
Yeah.
O o one thing , um , I noticed is that , um , the mean subtraction seems to make the PZM signals louder after they 've been re - synthesized. So I was wondering , is it possible that one reason it helped with the Aurora baseline system is  just as a kind of gain control ? Cuz some of the PZM signals sound pretty quiet if you don't amplify them.