private void SpeechRecognitionEngine_RecognizeCompleted(object sender, RecognizeCompletedEventArgs e)
{
systemLog.DebugFormat("{0} Recognize completed", prefix);
//systemLog.DebugFormat(" Babble timeout: {0}", e.BabbleTimeout);
//systemLog.DebugFormat(" Cancelled: {0}", e.Cancelled);
//systemLog.DebugFormat(" Error: {0}", e.Error?.Message);
//systemLog.DebugFormat(" Initial Silence Timeout: {0}", e.InitialSilenceTimeout);
//systemLog.DebugFormat(" Input Stream Ended: {0}", e.InputStreamEnded);
if (e.Error != null)
{
systemLog.Error(prefix + " " + e.Error.Message, e.Error);
}
stream = null;
}
public void Start()
{
foreach (RecognizerInfo config in SpeechRecognitionEngine.InstalledRecognizers())
{
if (config.Culture.ToString() == "en-US")
{
speechRecognitionEngine = new SpeechRecognitionEngine(config);
break;
}
}
if (speechRecognitionEngine == null)
{
}
stream = new SpeechStream(65536);
//var choices = new Choices();
//choices.Add(new string[] { "hello", "test", "one", "two", "three" });
//var builder = new GrammarBuilder();
//builder.Append(choices);
speechRecognitionEngine.InitialSilenceTimeout = new TimeSpan(0, 0, 1);
speechRecognitionEngine.LoadGrammar(new DictationGrammar());
//speechRecognitionEngine.LoadGrammar(new Grammar(builder));
//speechRecognitionEngine.AudioLevelUpdated += (s, e) => { systemLog.DebugFormat("{0} Audio level updated to {1}", prefix, e.AudioLevel); };
//speechRecognitionEngine.AudioSignalProblemOccurred += (s, e) => { systemLog.DebugFormat("{0} Audio signal problem occurred; {1}", prefix, e.AudioSignalProblem.ToString()); };
//speechRecognitionEngine.AudioStateChanged += (s, e) => { systemLog.DebugFormat("{0} Audio state changed to {1}", prefix, e.AudioState.ToString()); };
speechRecognitionEngine.RecognizeCompleted += SpeechRecognitionEngine_RecognizeCompleted;
speechRecognitionEngine.SpeechRecognized += SpeechRecognitionEngine_SpeechRecognized;
//speechRecognitionEngine.SpeechDetected += (s, e) => { systemLog.DebugFormat("{0} Speech detected", prefix); };
//speechRecognitionEngine.SpeechRecognitionRejected += (s, e) => { systemLog.DebugFormat("{0} Speech recognition rejected", prefix); };
//speechRecognitionEngine.SpeechHypothesized += (s, e) => { systemLog.DebugFormat("{0} Speech hypothesized", prefix); };
var safi = new SpeechAudioFormatInfo(EncodingFormat.ULaw, 8000, 8, 1, 8000, 1, null);
// new SpeechAudioFormatInfo(8000, AudioBitsPerSample.Sixteen, AudioChannel.Mono);
speechRecognitionEngine.SetInputToAudioStream(stream, safi);
speechRecognitionEngine.RecognizeAsync(RecognizeMode.Multiple);
IsReady = true;
}