Re: [Kaldi-developers] methods for phoneme recognitions

[Daniel P. <dp...@gm...>]

It seems to me that what you need to do is to create a suitable language
model for sequences of phones.  E.g. get examples of the kind of phone
sequences that children doing these exercises will typically produce, and
build a language model on those the same way you would for word sequences.
 You could accomplish this using a lexicon that was trivial, with one word
for each phone.
It will be difficult to get good results without matched training data, as
children's speech is quite different from adults'.
Dan


On Tue, Feb 26, 2013 at 4:15 PM, Nathan Dunn <nd...@ca...> wrote:

>
> I'm trying to put to create a tool to recognize spoken phonemes for
> children's reading comprehension, i.e., children speaking phonemes only,
> not the words and of course not a sentence.
>
> After looking a bit more, it looks there are a couple of good options:
>
> 1 - (thanks Dan) Create a lexicon consisting of just phones, that you can
> use at test time - removing the word-position-dependencey
> 2 - Extract phones directly from transitions prior to word alignment
> (i.e., directly from the acoustic model).
>
> For #2 - I would worry that the lack of information might be problematic.
>  The advantage is that I only need enough data for the acoustic model.
> Anyway, I would be very happy to share whatever I do come up with with.
>
> Any thoughts on this would be helpful.
>
> Thanks,
>
> Nathan Dunn, PhD.
> 541-221-2418
> CAS Scientific Programmer
> http://blogs.uoregon.edu/casspr/
> nd...@ca...
>
>
>