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Prompts transcriptions
User: samuel buffet
Date: 9/10/2008 2:13 pm
Views: 8641
Rating: 17

Hi Daniël and Ken,

I start another thread for that :

>When you have a bigger amount of prompts you have to take the monophones and triphones (explained here: http://www.voxforge.org/home/docs/faq/faq/what-is-the-different-between-a-monophone-and-a-triphone) into account.

So I imagine next step is to do the transcription of the prompts into phonemes and triphones, right ?

That's a huge work but I know a GPL Phonetizer for French, is there any pb to use it to start the job ?

Phonemes to triphones will be easy If I have understood correctly what you want.

What phonetic alphabet do you need ?

Samuel,

Re: Prompts transcriptions
User: dano
Date: 9/11/2008 2:59 am
Views: 130
Rating: 18

Hi Samuel,

I meant that your prompts must have a good coverage for the often used phonemes in your language.

Although you can make a pronunciation dictionary if there is no good one for your language now.

Daniël

Re: Prompts transcriptions
User: samuel buffet
Date: 9/11/2008 3:05 pm
Views: 133
Rating: 19

Evening Daniël,

Okay I get you point about the coverage issue .

So actually I've done a quick transcription of prompts with espeak.

The transcription is not that bad, but I need to do some manual modifications.

Btw, without those modifications I have those stats for the first set of prompts I have pushed in the Listen section.

39 phonemes generated by espeak qty from 1 to 3290

6883 triphones qty from 1 to 240

But I think it's not correct because right now pause is considered as phoneme.

Do we have to consider pauses as a phoneme to built triphones or not ?

Thanks,

Samuel,

 

Re: Prompts transcriptions
User: dano
Date: 9/11/2008 3:24 pm
Views: 345
Rating: 19

It should.

look at the translate example

t+r t-r+@ r-@+n @-n+s n-s+l s-l+e l-e+t e-t

you see, tr and tr@ are different triphones, you can see it as <pause>tr , tr@ etc.

Daniël

Re: Prompts transcriptions
User: samuel buffet
Date: 9/12/2008 1:13 am
Views: 201
Rating: 15

Hi there,

So to be perfectl sure I've understood, let's take an example with a pause between 2 words :

sentense : Alors, quand tout semble perdu, un homme se dresse.


phonemes : a l O R _ k a~ t u s a~ b l p E R d y _ 9~ n2 O m s @ d R E s

triphones : a+l   a-l+O   l-O+R   O-R+_   R-_+k   _-k+a~   k-a~+t   a~-t+u   t-u+s   u-s+a~   s-a~+b   a~-b+l   b-l+p   l-p+E   p-E+R   E-R+d   R-d+y   d-y+_   y-_+9~   _-9~+n2   9~-n2+O   n2-O+m   O-m+s   m-s+@   s-@+d   @-d+R   d-R+E   R-E+s   E-s

Is that good ?

Samuel,

Re: Prompts transcriptions
User: kmaclean
Date: 9/12/2008 12:48 pm
Views: 165
Rating: 16

HI Samuel & Daniël,

>Do we have to consider pauses as a phoneme to built triphones or not ?

I'm not sure I understand why you are trying to create your own triphones... Triphones are generated automatically from your corpus using the acoustic model creation tools - see Step 9 of the VoxForge tutorial.

What you need is a pronunciation dictionary (see LIUM Tools - you need to check licensing though), some French prompt recordings (the French Speech Submission app is live - so you can submit speech that way, or record your own...), and just follow the VoxForge tutorial to create your own monophone acoustic model (Step 1 to Step 8) for HTK/Julius.

In order to create an HTK/Julius triphone-based acoustic model, you'll need a tree.hed script.  I've never created one.  For more information on how to create a tree.hed file for a new language, see the following links:

See also the HTK manual

Note that the Sphinx acoustic model creation process creates its own  "questions" - see this post for more information: Creating Sphinx acoustic models.

Ken

Re: Prompts transcriptions
User: samuel buffet
Date: 9/12/2008 1:51 pm
Views: 151
Rating: 17

Hi Ken,

If I've get Daniël's point, it's only to quantify the *language range* covered by the prompts.

But I remember you words -" ... it is more an art than a science ..."

For the acoustic model, I've already found a 63k words GPL dictionnary and a 300k words "GPL inspired" (I'll contact  them later to be sure ...)

But, right now, I'll wait a few days to see if everything is alright and then I'll create a wiki page for VoxForge on Ubuntu.fr

Samuel,

 

Re: Prompts transcriptions
User: kmaclean
Date: 9/12/2008 2:26 pm
Views: 172
Rating: 21

Hi Samuel,

>it's only to quantify the *language range* covered by the prompts.

OK, that make sense, but don't get to hung on it at this point, you still need many more speech contributions from many different people.

Ken

Re: Prompts transcriptions
User: samuel buffet
Date: 9/12/2008 4:06 pm
Views: 148
Rating: 18

Hi Ken,

Alright, my plan is to write a small text to advertise VoxForge (maybe a video demo on YouTube) an to contact a few influent blogers with access to Planet aggregators, to propose them my text to write a post.

But before trying to give an impulsion,  I'll wait a few days to see if everything is working well.

Are you okay with that ?

From what I've done this evening, I feel the need to write another set of prompts.

Samuel,

Re: Prompts transcriptions
User: dano
Date: 9/13/2008 12:51 pm
Views: 244
Rating: 17

Hi Samuel,

You need a good working demo if you want a good visited YouTube-video. Try for example Gnome Voice Control 0.3 if you want to have  a good example.

This is a good example http://nl.youtube.com/watch?v=GCSgkUnlGGA, although the creator has a bad English voice, and if you want to promote VoxForge, you have to be clear where they have to go to.

Daniël

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