How about you , Carmen ?
Well , I am still working with , eh , VTS. And , one of the things that last week , eh , say here is that maybe the problem was with the diff because the signal have different level of energy.
Hmm ?
And , maybe , talking with Stephane and with Sunil , we decide that maybe it was interesting to  to apply on - line normalization before applying VTS. But then  we decided that that 's  it doesn't work absolutely , because we modified also the noise. And  Well , thinking about that , we  we then  we decide that maybe is a good idea. We don't know. I don't hav I don't  this is  I didn't  do the experiment yet  to apply VTS in cepstral domain.