Load grammar

Hello,

I'm trying to make a speech recognition web service : a .wav file and
an SRGS grammar as input and the recognized sentence as output.

The grammar used is a near 200Ko , and the loading time is about 10 s
on my pc.
To reduce this time , I would load it in a DLL as explained at
http://msdn2.microsoft.com/en-us/library/system.speech.recognition.srgsgrammar.s
rgsgrammarcompiler.compileclasslibrary.aspx
and at
http://msdn2.microsoft.com/en-us/library/ms554237.aspx

I've compiled my grammar in "lib.DLL".
Then Grammar g = new Grammar("lib.DLL") gives out an Exception :
System.FormatException: lib.dll(1,1): error : Format de grammaire XML
non valide. Impossible de charger la grammaire dans le modèle d'objet
de document XML. ---> System.Xml.XmlException: Données non valides au
niveau racine. Ligne 1, position 1.

Can someone help me out please ?

The grammar library is not meant to be used that way. It is like a normal 
DLL that you can add as a reference to a managed project. For example, a 
SampleGrammar.xml  can be compiled as SampleGrammar class that inherits the 
Grammar class. This class would be a file SampleGrammar.dll, and the 
referencing projects can just instantiate objects of the class to be used 
like a normal Grammar object.

I think you should compile the grammar into a CFG (either programmatically 
with SrgsGrammarCompiler.Compile method, or with GC.exe shipped with the 
Vista SDK). Then you can load the CFG with the method. The DLLs would 
contain the CFG as a resource anyway, so there is no need to make a DLL for 
your scenario.


<ssaidou@virtuoz.com> wrote in message 
news:1180713854.702906.18160@q66g2000hsg.googlegroups.com...
Hello,

I'm trying to make a speech recognition web service : a .wav file and
an SRGS grammar as input and the recognized sentence as output.

The grammar used is a near 200Ko , and the loading time is about 10 s
on my pc.
To reduce this time , I would load it in a DLL as explained at
http://msdn2.microsoft.com/en-us/library/system.speech.recognition.srgsgrammar.s
rgsgrammarcompiler.compileclasslibrary.aspx
and at
http://msdn2.microsoft.com/en-us/library/ms554237.aspx

I've compiled my grammar in "lib.DLL".
Then Grammar g = new Grammar("lib.DLL") gives out an Exception :
System.FormatException: lib.dll(1,1): error : Format de grammaire XML
non valide. Impossible de charger la grammaire dans le modèle d'objet
de document XML. ---> System.Xml.XmlException: Données non valides au
niveau racine. Ligne 1, position 1.

Can someone help me out please ?

Hieu Nguyen,

Thanks for reply.
It works but loading an XML grammar or a CFG format grammar takes the
same time !!

Do you know any solution to make the grammar loading faster ??