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Language Model for Voxforge Spanish Acoustic Model
User: e.fields
Date: 12/15/2012 1:43 am
Views: 12053
Rating: 19

I need a language model compatible with the Voxforge Spanish model. I don't know how to create one myself, nor do I have the text resources available to do so.

I'm rather short on time, and I honestly don't really want to create my own...I'd just like to download a reasonable model now. Does anyone know of an existing one I can download?

Re: Language Model for Voxforge Spanish Acoustic Model
User: nsh
Date: 12/15/2012 1:49 am
Views: 266
Rating: 20

Hello

For which task do you need that language model? Language models are very dependent on the topic of the speech you are going to decode. A language model for broadcast news is different from a language model for a personal assistant.

For some topics it's very easy to create a language model, it should take you less than to ask the question. For others it's more complex.

 

Re: Language Model for Voxforge Spanish Acoustic Model
User: e.fields
Date: 12/15/2012 1:58 am
Views: 287
Rating: 15

I'd like to use a model for dictation software. The dialogue would be taken from broadcast news clips.

Re: Language Model for Voxforge Spanish Acoustic Model
User: nsh
Date: 12/15/2012 3:55 am
Views: 205
Rating: 16

Sorry, broadcast news are not a dialogue. It's when a single dictor is reading the news. Did you mean something else? Can you please clarify?

 

Re: Language Model for Voxforge Spanish Acoustic Model
User: Visitor
Date: 12/15/2012 12:19 pm
Views: 222
Rating: 19

It would be broadcast news with dialogue from interviews that would occur between two speakers.

I've actually found a model I think would work well, a Spanish broadcast news model, located here. However, it doesn't seem to be working well with the Voxforge acoustic model. When running the speech recognizer (using the Lattice demo) I keep receiving errors like these:

12:27:52.901 SEVERE lexTreeLinguist Bad HMM Unit: V

12:27:52.909 SEVERE HMMTree Missing HMM for unit E with lc=V rc=R

12:27:52.909 SEVERE lexTreeLinguist Bad HMM Unit: V

12:27:52.909 SEVERE HMMTree Missing HMM for unit N with lc=O rc=V

12:27:52.909 SEVERE lexTreeLinguist Bad HMM Unit: V

12:27:52.909 SEVERE HMMTree Missing HMM for unit V with lc=N rc=E

 

I receive hundreds of these same types of errors. Could their be a problem with my config.xml file? I've attached it for viewing.

configVox.xml configVox.xml
Re: Language Model for Voxforge Spanish Acoustic Model
User: nsh
Date: 12/15/2012 2:58 pm
Views: 201
Rating: 18

The dictionaries h4.dict and voxforge_es_sphinx.MX.dic are for Mexican Spanish acoustic model and is not compatible with Voxforge Spanish acoustic model. The phone sets are different.

Use the dictionary from Voxforge Spanish acoustic model, it is compatible. The name of the file is voxforge_es_sphinx.dic

For better assesement of the recognitoin accuracy provide the audio file you are trying to recognize, not just the configuration file. Often issue is in the audio file itself.

Please do not ask the same question twice, it's not fun to copy-paste answers.

 

Re: Language Model for Voxforge Spanish Acoustic Model
User: Visitor
Date: 12/15/2012 3:44 pm
Views: 261
Rating: 20

Thanks, that seems to have fixed it!

Re: Language Model for Voxforge Spanish Acoustic Model
User: e.fields
Date: 12/15/2012 5:33 pm
Views: 269
Rating: 17

Hmmm, though the recognizer is now working, the recognition results seem to be extremely poor, almost completely off. Could it be the audio file I'm using? It's an 8kHz signed 16-bit PCM little-endian. I've uploaded it below.

Sample.1minute.ToSeparateSpeakers_new.wav Sample.1minute.ToSeparateSpeakers_new.wav
Re: Language Model for Voxforge Spanish Acoustic Model
User: nsh
Date: 12/16/2012 8:13 am
Views: 248
Rating: 17

Please provide more information. What sphinx4 version are you using? What config file are you using? What are the results you get exactly?

Your audio is pretty tight to recognize and contain music. Sphinx4 doesn't have a way to strip the music from the audio, try to remove music manually first.

For more information see the FAQ:

http://cmusphinx.sourceforge.net/wiki/faq#qwhy_my_accuracy_is_poor

Re: Language Model for Voxforge Spanish Acoustic Model
User: e.fields
Date: 12/16/2012 11:30 am
Views: 267
Rating: 19

I'm using the latest version of Sphinx4 with the Lattice demo. I've attached the config file as well.

config.xml config.xml
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