public SpeechRecognitionManager(Configuration config)
{
this.config = config;
dialogueMinimumConfidence = float.Parse(config.Get("SpeechRecognition", "dialogueMinConfidence", "0.5"), CultureInfo.InvariantCulture);
commandMinimumConfidence = float.Parse(config.Get("SpeechRecognition", "commandMinConfidence", "0.7"), CultureInfo.InvariantCulture);
logAudioSignalIssues = config.Get("SpeechRecognition", "bLogAudioSignalIssues", "0") == "1";
Trace.TraceInformation("Locale: {0}\nDialogueConfidence: {1}\nCommandConfidence: {2}", config.GetLocale(), dialogueMinimumConfidence, commandMinimumConfidence);
pauseAudioFile = config.Get("SpeechRecognition", "pauseAudioFile", DEFAULT_PAUSE_AUDIO_FILE).Trim();
resumeAudioFile = config.Get("SpeechRecognition", "resumeAudioFile", DEFAULT_RESUME_AUDIO_FILE).Trim();
List <string> pausePhraseStrings = config.GetPausePhrases();
List <string> resumePhraseStrings = config.GetResumePhrases();
foreach (string phrase in pausePhraseStrings)
{
if (phrase == null || phrase.Trim() == "")
{
continue;
}
Trace.TraceInformation("Found pause phrase: '{0}'", phrase);
try {
Grammar g = Phrases.createGrammar(Phrases.normalize(phrase, config), config);
pausePhrases.Add(g);
} catch (Exception ex) {
Trace.TraceError("Failed to create grammar for pause phrase {0} due to exception:\n{1}", phrase, ex.ToString());
}
}
foreach (string phrase in resumePhraseStrings)
{
if (phrase == null || phrase.Trim() == "")
{
continue;
}
Trace.TraceInformation("Found resume phrase: '{0}'", phrase);
try {
Grammar g = Phrases.createGrammar(Phrases.normalize(phrase, config), config);
resumePhrases.Add(g);
} catch (Exception ex) {
Trace.TraceError("Failed to create grammar for resume phrase {0} due to exception:\n{1}", phrase, ex.ToString());
}
}
this.DSN = new SpeechRecognitionEngine(config.GetLocale());
this.DSN.UpdateRecognizerSetting("CFGConfidenceRejectionThreshold", 10); // Range is 0-100
this.DSN.EndSilenceTimeoutAmbiguous = TimeSpan.FromMilliseconds(250);
this.DSN.AudioStateChanged += DSN_AudioStateChanged;
this.DSN.AudioSignalProblemOccurred += DSN_AudioSignalProblemOccurred;
this.DSN.SpeechRecognized += DSN_SpeechRecognized;
this.DSN.SpeechRecognitionRejected += DSN_SpeechRecognitionRejected;
this.deviceEnum.RegisterEndpointNotificationCallback(this);
WaitRecordingDeviceNonBlocking();
}
public static CommandList FromIniSection(IniData ini, string sectionName, Configuration config)
{
KeyDataCollection sectionData = ini.Sections[sectionName];
CommandList list = new CommandList();
if (sectionData != null)
{
foreach (KeyData key in sectionData)
{
string value = key.Value.Trim();
if (value.Length == 0)
{
Trace.TraceInformation("Ignore empty command '{0}'", key.KeyName);
continue;
}
Grammar grammar;
if (value[0] == '@')
{
string path = config.ResolveFilePath(value.Substring(1));
if (path == null)
{
Trace.TraceError("Cannot find the SRGS XML file '{0}', key: {1}", value.Substring(1), key.KeyName);
continue;
}
// load a SRGS XML file
XmlDocument doc = new XmlDocument();
doc.Load(path);
// If xml:lang in the file does not match the DSN's locale, the grammar cannot be loaded.
XmlAttribute xmlLang = doc.CreateAttribute("xml:lang");
xmlLang.Value = config.GetLocale().Name;
doc.DocumentElement.SetAttributeNode(xmlLang);
MemoryStream xmlStream = new MemoryStream();
doc.Save(xmlStream);
xmlStream.Flush(); //Adjust this if you want read your data
xmlStream.Position = 0;
grammar = new Grammar(xmlStream);
}
else
{
grammar = Phrases.createGrammar(Phrases.normalize(key.KeyName, config), config);
}
grammar.Name = key.KeyName;
list.commandsByPhrase[grammar] = value;
}
}
return(list);
}
private DialogueList(long id, List <string> lines, Configuration config)
{
this.id = id;
this.config = config;
List <string> goodbyePhrases = config.GetGoodbyePhrases();
for (int i = 0; i < lines.Count; i++)
{
string line = lines[i];
if (line == null || line.Trim() == "")
{
continue;
}
try {
Grammar g = Phrases.createGrammar(line, config, config.IsSubsetMatchingEnabled());
grammarToIndex[g] = i;
}
catch (Exception ex) {
Trace.TraceError("Failed to create grammar for line {0} due to exception:\n{1}", line, ex.ToString());
}
}
foreach (string phrase in goodbyePhrases)
{
if (phrase == null || phrase.Trim() == "")
{
continue;
}
Trace.TraceInformation("Found goodbye phrase: '{0}'", phrase);
try {
Grammar g = Phrases.createGrammar(phrase, config, config.IsSubsetMatchingEnabled());
grammarToIndex[g] = -2;
} catch (Exception ex) {
Trace.TraceError("Failed to create grammar for exit dialogue phrase {0} due to exception:\n{1}", phrase, ex.ToString());
}
}
}