And what I was saying is that the only thing I think that it buys you is um based on whether you feed it something different. And something different in some fundamental way. And so the kind of thing that  that she was talking about before , was looking at something uh ab um  something uh about the difference between the  the uh um log FFT uh log power uh and the log magnitude uh F F - spectrum uh and the um uh filter bank.
Yeah.
And so the filter bank is chosen in fact to sort of integrate out the effects of pitch and she 's saying you know trying  So the particular measure that she chose was the variance of this m of this difference , but that might not be the right number.
Mm - hmm. Maybe.