Acoustic Models for HUD

[Siegfried-Angel Gevatter Pujals]

Hi Ted,

It's great to hear that voice recognition in Ubuntu is finally getting some
love :).

The English Voxforge models are currently packaged in julius-voxforge.
There I did go with the nightly builds there, since in addition to the time
and disk size (which IMHO is already enough of a reason), it needed HTK to
build, which is not redistributable. It'd also be interested in more
opinions though.

Out of curiosity, what's the plan for voice recognition in Ubuntu?
Sphinx/Julius/Kaldi?

Regards,

Siegfried

Am Montag, 25. Februar 2013 schrieb Ted Gould :

> **
> Howdy,
>
> As some folks may have noticed we're working on a voice input feature in
> HUD.  Part of what that requires is acoustic models to be available to
> understand the speech coming in.  Currently in Ubuntu there are a couple of
> these, but we need to get to the point of providing for various languages
> and having a way to update these continuously as the data gets better.
>
> So that leads to the question: How do we want these to look in Ubuntu?
>
> The best open source for training data appears to be Voxforge<http://www.voxforge.org>,
> a collection of samples based on known text.  These samples can then be
> used to compile the acoustical model that the various libraries need.  This
> takes significant amounts of CPU time.  Their most complete language is
> English, which has about 100 hours of audio, and takes about 10 CPU hours
> to compile the models that Sphinx needs.  While English is the most
> complete, I think it's important to realize that the best/worst case
> scenario that supports all languages well could result in easily over a
> thousand hours of CPU time.
>
> So if we think of things in the classic source vs. binary split, it seems
> like the Voxforge data is the source and we should make a source package
> that then builds these binary models.  But, at some level, we're just
> exchanging binary data (sound files) for different binary files (acoustic
> models).  Would it make more sense to package something like the Voxforge
> nightly builds<http://www.repository.voxforge1.org/downloads/Nightly_Builds/>for use in Ubuntu?
>
> I'd love to hear people's thoughts on this.  I'm leaning towards putting
> the Voxforge data as a source package, as it is our source, but I'm worried
> about the impact it may have on rebuilding the archive.
>
> Thanks,
> Ted
>
>

-- 
Siegfried
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