Re: [Kaldi-users] HMM Topology skipping question

[Mailing l. u. f. U. C. a. U. <kal...@li...>]

You can easily introduce skipping, just edit the topo.proto file or
whatever it is called.
If a phone is completely skippable (i.e. there is path that involves
skipping all the states), it may cause problems though.

Dan


On Wed, Jun 26, 2013 at 11:37 AM, Mailing list used for User
Communication and Updates <kal...@li...> wrote:
> Hi all,
>
> The standard Kaldi HMM topology doesn't seem to have state skipping, eg, hmm
> state 0 and 1 doesn't go to state 3 directly.  Would this introduce a
> limitation that a phone must be pronounced for at least 3 frames (30ms)?
>
> The reason for asking is that we have seen some poor decoding accuracy for
> very fast speeches.  Our analysis shows rather high phone error.  Some
> phones in the fast speech segments were pronounced definitely less than
> 30ms.  gmm-align seems to point this as well.  The smallest phone alignment
> window from gmm-align is 30ms.
>
> We probably will experiment with introducing skipping in HMM topology.
> Before we start, any heads-ups?  Potential pointers/ideas?  Or, am I missing
> something entirely?
>
> --
> Thanks
> Ben Jiang
>
>
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