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helmut.kuper at ewetel.de
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PostPosted: Fri Jul 31, 2009 8:28 am    Post subject: [Freeswitch-users] pocketsphinx Reply with quote
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Hello,

I spent a few days working on my problem. I played around with
voxforge's data, read some of the train docs of CMU, and debugged the
sphinxbase, pocketsphinx and mod_pocketsphinx.

Results:
- -I found a way to use the voxforge data as training data for creation of
a german language corpus.

- -I enabled the logging of pocketsphinx to stderr (Dirty, but easy way to
see what went wrong when FS loads grammar, mdef, etc and simply stopped.
Very helpful!

- -I had to add a "dictcase" parameter to pocketsphinx.conf.xml resp
mod_pocketsphinx.c to allow case sensitive dictionaries (like the german
dictionary from voxforge).


FS starts up with german language model and detects the words as
expected. But it's not so reliable as I want to ... I guess this is
caused by the very small amount of training audio data. I used 4000 of
19000 audio files provided by voxforge due to the reason that voyforge's
training fileid-list contains only 4000 files ... I have to create new
fileid-list and transcription-lists containing all audio I have
downloaded from voxforge.


Quite complex the whole thing ...

regards
helmut



On 10.07.2009 14:53, Helmut Kuper wrote:
Quote:
Hi,

I try to change pocketsphinx's grammar from default (english) to german.
I found this archive
(http://www.repository.voxforge1.org/downloads/de/Trunk/AcousticModels/), which
contains similar files like those which can be found in
grammar/model/communicator directory.

Unfortunately FS crashed without writing a core file nor logfile enries
as soon as as pizza demo trys to detect speech.

Any Ideas? Maybe someone has already working grammar/model files for
german language?


regards
helmut

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brian at freeswitch.org
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PostPosted: Fri Jul 31, 2009 8:44 am    Post subject: [Freeswitch-users] pocketsphinx Reply with quote
On Jul 31, 2009, at 8:18 AM, Helmut Kuper wrote:

Quote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hello,

I spent a few days working on my problem. I played around with
voxforge's data, read some of the train docs of CMU, and debugged the
sphinxbase, pocketsphinx and mod_pocketsphinx.

Results:
- -I found a way to use the voxforge data as training data for
creation of
a german language corpus.

Care to document the process?

Quote:

- -I enabled the logging of pocketsphinx to stderr (Dirty, but easy
way to
see what went wrong when FS loads grammar, mdef, etc and simply
stopped.
Very helpful!


I can't recall if there is a logger callback we can register for
this... Last I checked you couldn't this is something we should make a
config option for up in the mod if possible.

Quote:

- -I had to add a "dictcase" parameter to pocketsphinx.conf.xml resp
mod_pocketsphinx.c to allow case sensitive dictionaries (like the
german
dictionary from voxforge).

What do you mean? Can you put this on jira please.

Quote:


FS starts up with german language model and detects the words as
expected. But it's not so reliable as I want to ... I guess this is
caused by the very small amount of training audio data. I used 4000 of
19000 audio files provided by voxforge due to the reason that
voyforge's
training fileid-list contains only 4000 files ... I have to create
new
fileid-list and transcription-lists containing all audio I have
downloaded from voxforge.


Quite complex the whole thing ...

regards
helmut


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http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
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msc at freeswitch.org
Guest
PostPosted: Fri Jul 31, 2009 1:54 pm    Post subject: [Freeswitch-users] pocketsphinx Reply with quote
Helmut,

Your hard work is appreciated. Like Brian said, we'd all be interested in knowing more. Please feel free to put this on the wiki or see me off list and we'll discuss further how to document it for the good of the FS community.

Thanks!
-MC

On Fri, Jul 31, 2009 at 6:18 AM, Helmut Kuper <helmut.kuper@ewetel.de (helmut.kuper@ewetel.de)> wrote:
Quote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hello,

I spent a few days working on my problem. I played around with
voxforge's data, read some of the train docs of CMU, and debugged the
sphinxbase, pocketsphinx and mod_pocketsphinx.

Results:
- -I found a way to use the voxforge data as training data for creation of
a german language corpus.

- -I enabled the logging of pocketsphinx to stderr (Dirty, but easy way to
see what went wrong when FS loads grammar, mdef, etc and simply stopped.
Very helpful!

- -I had to add a "dictcase" parameter to pocketsphinx.conf.xml resp
mod_pocketsphinx.c to allow case sensitive dictionaries (like the german
dictionary from voxforge).


FS starts up with german language model and detects the words as
expected. But it's not so reliable as I want to ... I guess this is
caused by the very small amount of training audio data. I used 4000 of
19000 audio files provided by voxforge due to the reason that voyforge's
training fileid-list contains only 4000 files ...  I have to create new
fileid-list and transcription-lists containing all audio I have
downloaded from voxforge.


Quite complex the whole thing ...

regards
helmut



On 10.07.2009 14:53, Helmut Kuper wrote:
Quote:
Hi,

I try to change pocketsphinx's grammar from default (english) to german.
I found this archive
(http://www.repository.voxforge1.org/downloads/de/Trunk/AcousticModels/), which
contains similar files like those which can be found in
grammar/model/communicator directory.

Unfortunately FS crashed without writing a core file nor logfile enries
as soon as as pizza demo trys to detect speech.

Any Ideas? Maybe someone has already working grammar/model files for
german language?


regards
helmut

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=6Bu8
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helmut.kuper at ewetel.de
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PostPosted: Wed Aug 05, 2009 10:00 am    Post subject: [Freeswitch-users] pocketsphinx Reply with quote
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Hash: SHA1

Hi Michael,

today I put my documentation on FS wiki describing the steps to get a
8kHz sample rate acoustic model basing on voxforge's data for german
language. It's not complete, yet.

You can found it here: http://wiki.freeswitch.org/wiki/Mod_pocketsphinx

regards
Helmut


On 31.07.2009 20:45, Michael Collins wrote:
Quote:
Helmut,

Your hard work is appreciated. Like Brian said, we'd all be interested
in knowing more. Please feel free to put this on the wiki or see me off
list and we'll discuss further how to document it for the good of the FS
community.
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msc at freeswitch.org
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PostPosted: Wed Aug 05, 2009 5:16 pm    Post subject: [Freeswitch-users] pocketsphinx Reply with quote
On Wed, Aug 5, 2009 at 9:56 AM, Helmut Kuper <helmut.kuper@ewetel.de (helmut.kuper@ewetel.de)> wrote:
Quote:
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


Hi Michael,

today I put my documentation on FS wiki describing the steps to get a
8kHz sample rate acoustic model basing on voxforge's data for german
language. It's not complete, yet.

You can found it here: http://wiki.freeswitch.org/wiki/Mod_pocketsphinx

regards
Helmut


Thanks!
I'd like to ask the community members who are interested in ASR and PocketSphinx to please review Helmut's page and add to it as well as offer feedback.
-MC
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