Mm - hmm.
And so if you apply variance normalization on this , it completely sc screw everything. Well.
Mm - hmm.
Um. Uh. Yeah. So yeah. And what they did at OGI is just  uh they don't use on - line normalization , for the moment , on spectral subtraction and I think  Yeah. I think as soon as they will try on - line normalization  there will be a problem. So yeah , we 're working on the same thing but  I think uh with different  different system and