Um , and I don't know if that  I mean , since you 're dealing with issues of robustness , you know , maybe  maybe this isn't right , but it 'd be something I 'd be concerned about. Because , for instance , you can imagine , uh , uh , i i if you remember from  from , uh  from your  your quals , John Ohala saying that , uh , " buh "  and " puh "  differed , uh , not really cuz of voicing but because of aspiration. I mean , in as far as wha what 's really there in the acoustics.
Mm - hmm.
So , um , if you looked  if you were doing some coarse clustering , you probably would put those two sounds together. And yet , I would gue I would guess that many of your recognition errors were coming from , uh , um , pfft ,  screwing up on this distinction.
Mm - hmm.