DtmfRecognitionEngine.AddTone Method

Adds a tone to the buffer for recognition against the loaded grammars.

Remarks

Warning

It is possible for a caller to send many simultaneous tones to a DTMF recognition engine which can cause it to take time to process. This processing time can cause the computer that is running the DTMF recognition engine to stop responding in a timely manner, much like a denial of service attack. It is recommended that the application put a limit on the total number of tones sent to a given instance of the DtmfRecognitionEngine class.

// Create the Recognizer
DtmfRecognizer dtmfRecognitionEngine = new DtmfRecognizer();

// Load a Grammar 
Grammar grammar = new Grammar("C:\\SampleGrammar.xml");
dtmfRecognitionEngine.LoadGrammar(grammar);

// Add some tones
dtmfRecognitionEngine.AddTone(1);
dtmfRecognitionEngine.AddTone(2);

Overload List

Name Description
DtmfRecognitionEngine.AddTone (Byte)
Adds a tone to the buffer for recognition against the loaded grammars.
DtmfRecognitionEngine.AddTone (DtmfTone)
Adds a tone to the buffer for recognition against the loaded grammars.

See Also

Reference

DtmfRecognitionEngine Class
DtmfRecognitionEngine Members
Microsoft.Speech.Recognition Namespace