Re: [Kaldi-users] HMM Topology skipping question

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

I already responded, perhaps your email is not going to your account from
sourceforge?


On Wed, Jun 26, 2013 at 2:01 PM, Mailing list used for User Communication
and Updates <kal...@li...> wrote:

> Hi all,
>
> The HMM topology in standard Kaldi recipe 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), eg, takes 3 frames to transition out?
>
> The reason for asking is that we have seen some poor decoding accuracy for
> very fast speeches.  In the fast speech segments , phones were pronounced
> definitely less than 30ms.  This results in very high phone errors.
> Separate gmm-align experiments in the same segments also point to 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 or particular reasons that this may not be a
> good idea?  Or, am I missing something entirely?
>
> --
> Thanks
>
> Ben Jiang
>
>
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