So. Um.
Uh , yeah. Yeah. I brought some  I don't know if   some  figures here. Well. I start  we started to work on spectral subtraction. And  um  the preliminary results were very bad.
Uh - huh.
So the thing that we did is just to add spectral subtraction before this , the Wall uh process , which contains LDA on - line normalization. And it hurts uh a lot.