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.
So th So
So that if you throw away high modulation frequencies , then you can downsample.