### Negative variance

Posted:

**Mon Jan 17, 2011 12:38 pm**
by **dirknbr**

There are some negative variance values in FMCC, how is that possible?

o) parameters 148-167: 20 first mel cepstral coefficients variance values

Dirk

### Re: Negative variance

Posted:

**Mon Jan 17, 2011 2:46 pm**
by **zwan**

Dear Dirk and all

Unfortunately the parameters you mentioned are not the variance parameters.

This is due to the error that we have had in the parameterization script.

Please don't use parameters 148-167, since they are identical with parameters numbered 128-147.

These are mean mcc-s and have been calculated properly.

For the solution please use only those mean values.

Pawel Zwan