[hts-users:01235] Re: Multispace probability distribution!

["Antonio Bonafonte" <antonio.bonafonte@xxxxxxx>]

Lefteris,
I think the f0 and their derivatives cannot share the same stream because
the are some frames (first and last frames of voiced sounds) where f0 is
defined but not df0.

I am not htk expert, but I don't see any reason why having 7 streams make
the hmm models unstable.

Kind regards,
Toni

> Hello all!
>
> I would like to ask, why modeling F0 plus derivatives with multi-space
> probability distribution, hts uses 3 different separated streams of
> one-dimension (f0,df0,ddf0) and not using one stream for all of
> three-dimension ?  In case of using one stream it would be correct to
> model f0, or you suggest to use the same structure anyway?. I am
> interested about that because i want to use another stream structure to
> model the HMMs, but using that structure for lf0 (3 streams)i will have
> more than  6-7 streams  which maybe make the training unstable!
>
> Thank you in advance!!
>
> Lefteris Banos
>
>
>