um  As I said before , the  uh using Dan 's , uh , uh , vocal tract normalization option works very well. So , um , @ @  I ran one experiment where we 're just  did the vocal tract le normalization only in the test data ,
Mm - hmm.
so I didn't bother to retrain  the models at all , and it improved by one percent , which is about what we get with   uh , with , you know , just @ @  actually doing both training and test normalization , um , with , um ,  the , uh   uh , with the standard system. So , in a few hours we 'll have the numbers for the  for retraining everything with vocal tract length normalization and  So , that might even improve it further.
Great.