Yeah.
Or more generally , I guess , what  what is causing the degradation.
Yeah , yeah. Actually , there is one thing that  well  Um , generally we  we think that  most of the errors are within phoneme classes , and so I think it could be interesting to  to see if it  I don't think it 's still true when we add noise , and  so we have  I  I guess the confusion ma the confusion matrices are very different when  when we have noise , and when it 's clean speech. And probably , there is much more  between classes errors for noisy speech.
Mm - hmm.