c# - The language for the grammar does not match the language of the speech recognizer

Question

Good day! It is about Microsoft Server Speech SDK v11.0 (Server version).

I have run test example at MSDN sample . So English phrases -red,blue - recognized well. But I want to recognize Russian language too -install Microsoft Speech Recognition Language -TELE (ru-RU) and runs my app/

Code:

 static void DoWork()
    {

        Thread.CurrentThread.CurrentCulture = new CultureInfo("ru-RU");
        Thread.CurrentThread.CurrentUICulture = new CultureInfo("ru-RU");

        // Create a new SpeechRecognitionEngine instance.
        SpeechRecognitionEngine sre = new SpeechRecognitionEngine();
        
        // Configure the input to the recognizer.
        sre.SetInputToWaveFile(@"c:Testкрасный.wav");
        
        // Create a simple grammar that recognizes "red", "green", or "blue".
        Choices colors = new Choices(); 
       // colors.Add(new string[] { "red", "green", "blue","красный" });
        colors.Add(new string[] { "красный" }); //russian word- "red"
        
        // Create a GrammarBuilder object and append the Choices object.
        GrammarBuilder gb = new GrammarBuilder();
        gb.Culture = new CultureInfo("ru-RU"); // add Culture Info

        gb.Append(colors);

        Console.WriteLine(gb.Culture.CultureTypes);

        // Create the Grammar instance and load it into the speech recognition engine.
        Grammar g = new Grammar(gb);
        sre.LoadGrammar(g);

        // Register a handler for the SpeechRecognized event.
        sre.SpeechRecognized +=
          new EventHandler<SpeechRecognizedEventArgs>(sre_SpeechRecognized);

        // Start recognition.
        sre.Recognize();
    }
   
    // Create a simple handler for the SpeechRecognized event.
    static void sre_SpeechRecognized(object sender, SpeechRecognizedEventArgs e)
    {
        Console.WriteLine(String.Format("Speech recognized: {0}",e.Result.Text));
      
    }

Error appears at this line:

 sre.LoadGrammar(g);

The language for the grammar does not match the language of the speech recognizer.

So, how to fix this error? I try to set CultureInfo, but it does not works... Thank you!

Answer 1

Change the GrammarBuilder.Culture property would solve this error.

After:

GrammarBuilder gb = new GrammarBuilder();

Add:

gb.Culture = Thread.CurrentThread.CurrentCulture

So that the grammar culture matches the recognizer.