SpeechUI Class
Provides text and status information to the operating system in speech user interface to display to the user.
Assembly: System.Speech (in System.Speech.dll)
The example below is a handler for a SpeechRecognized event used by a Grammar designed to handle password input for the form "My password is …".
If a password is not present, or not valid, SendTextFeedback is used to send error information to the Speech platform user interface.
grammar.SpeechRecognized +=
delegate(object sender, SpeechRecognizedEventArgs eventArgs) {
SemanticValue semantics = eventArgs.Result.Semantics;
RecognitionResult result=eventArgs.Result;
if (!semantics.ContainsKey("Password")) { SpeechUI.SendTextFeedback(eventArgs.Result,"No Password Provided", false);
} else {
RecognizedAudio pwdAudio = result.GetAudioForWordRange(result.Words[3],
result.Words[result.Words.Count - 1]);
MemoryStream pwdMemoryStream = new MemoryStream();
pwdAudio.WriteToAudioStream(pwdMemoryStream);
if (!IsValidPwd(pwdMemoryStream)) {
string badPwd = System.IO.Path.GetTempPath() + "BadPwd" +(new Random()).Next().ToString() + ".wav";
FileStream waveStream = new FileStream(badPwd, FileMode.Create);
pwdAudio.WriteToWaveStream(waveStream);
waveStream.Flush();
waveStream.Close();
SpeechUI.SendTextFeedback(eventArgs.Result,
"Invalid Password", false);
}
}
};
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
