RecognizeCompletedEventArgs..::..BabbleTimeout Property |
RecognizeCompletedEventArgs Class Example See Also Send Feedback |
Gets a value that indicates whether a babble timeout generated the SpeechRecognitionEngine..::..RecognizeCompleted event.
Namespace:
Microsoft.Speech.Recognition
Assembly:
Microsoft.Speech (in Microsoft.Speech.dll)
Syntax
Visual Basic (Declaration) |
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Public ReadOnly Property BabbleTimeout As Boolean Get |
Visual Basic (Usage) |
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Dim instance As RecognizeCompletedEventArgs Dim value As Boolean value = instance.BabbleTimeout |
C# |
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public bool BabbleTimeout { get; } |
Property Value
Type: System..::..Booleantrue if the SpeechRecognitionEngine has detected only background noise for longer than was specified by its BabbleTimeout property; otherwise false.
Examples
The following example performs asynchronous speech recognition on a speech recognition grammar, using the SpeechRecognitionEngine..::..RecognizeAsync method. The example uses Choices and GrammarBuilder objects to create the speech recognition grammar before building it into a Grammar object. A handler for the SpeechRecognitionEngine..::..RecognizeCompleted event outputs information about the recognition operation to the console.
Copy Code | |
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using System; using Microsoft.Speech.Recognition; namespace SampleRecognition { class Program { private static SpeechRecognitionEngine recognizer; public static void Main(string[] args) { // Initialize a SpeechRecognitionEngine object and set its input. recognizer = new SpeechRecognitionEngine(new System.Globalization.CultureInfo("en-US")); recognizer.SetInputToDefaultAudioDevice(); // Configure recognition parameters. recognizer.InitialSilenceTimeout = TimeSpan.FromSeconds(5.0); recognizer.BabbleTimeout = TimeSpan.FromSeconds(3.0); recognizer.EndSilenceTimeout = TimeSpan.FromSeconds(1.0); recognizer.EndSilenceTimeoutAmbiguous = TimeSpan.FromSeconds(1.0); // Add a handler for the LoadGrammarCompleted event. recognizer.LoadGrammarCompleted += new EventHandler<LoadGrammarCompletedEventArgs>(recognizer_LoadGrammarCompleted); // Add a handler for the RecognizeCompleted event. recognizer.RecognizeCompleted += new EventHandler<RecognizeCompletedEventArgs>(recognizer_RecognizeCompleted); // Create a speech recognition grammar and build it into a Grammar object. Choices bankingMenu = new Choices(new string[] { "Access accounts", "Transfer funds", "Pay bills", "Get loan balance" }); GrammarBuilder banking = new GrammarBuilder(bankingMenu); Grammar bankGrammar = new Grammar(banking); bankGrammar.Name = "Banking Menu"; // Load the Grammar objects to the recognizer. recognizer.LoadGrammarAsync(bankGrammar); // Start asynchronous, continuous recognition. recognizer.RecognizeAsync(); // Keep the console window open. Console.ReadLine(); } // Handle the RecognizeCompleted event. static void recognizer_RecognizeCompleted(object sender, RecognizeCompletedEventArgs e) { if (e.Error != null) { Console.WriteLine( "RecognizeCompleted, error occurred during recognition: {0}", e.Error); return; } if (e.InitialSilenceTimeout || e.BabbleTimeout) { Console.WriteLine( "RecognizeCompleted: BabbleTimeout({0}), InitialSilenceTimeout({1}).", e.BabbleTimeout, e.InitialSilenceTimeout); return; } if (e.InputStreamEnded) { Console.WriteLine( "RecognizeCompleted: AudioPosition({0}), InputStreamEnded({1}).", e.AudioPosition, e.InputStreamEnded); } if (e.Result != null) { Console.WriteLine( "RecognizeCompleted: Grammar ({0}), Text ({1}), Confidence ({2}), AudioPosition ({3}).", e.Result.Grammar.Name, e.Result.Text, e.Result.Confidence, e.AudioPosition); } else { Console.WriteLine("RecognizeCompleted: No result."); } Console.WriteLine(); Console.WriteLine("Press any key to exit..."); Console.ReadKey(); } // Handle the LoadGrammarCompleted event. static void recognizer_LoadGrammarCompleted(object sender, LoadGrammarCompletedEventArgs e) { string grammarName = e.Grammar.Name; bool grammarLoaded = e.Grammar.Loaded; bool grammarEnabled = e.Grammar.Enabled; if (e.Error != null) { Console.WriteLine("LoadGrammar for {0} failed with a {1}.", grammarName, e.Error.GetType().Name); // Add exception handling code here. } Console.WriteLine("Grammar {0} {1} loaded and {2} enabled.", grammarName, (grammarLoaded) ? "is" : "is not", (grammarEnabled) ? "is" : "is not"); } } } |