Yeah. Or how are they using more than half , I guess maybe is what I
Yeah , so I  I think  uh , you guys are closer to it than me , so correct me if I 'm wrong , but I  I think that what 's going on is that in  in both cases , some kind of normalization is done to deal with convola convolutional effects. Uh , they have some cepstral  modification ,
Mm - hmm.
right ? In our case we have a couple things. We have the on - line normalization and then we have the LDA RASTA. And  they seem to comple complement each other enough and be different enough that they both seem to help  help us. But in any event , they 're both doing the same sort of thing. But there 's one difference. The LDA RASTA , uh , throws away high modulation frequencies. And they 're not doing that.