/// <summary>
 /// Constructor.  Used for unit testing.
 /// </summary>
 /// <param name="engine">Speech recognition engine</param>
 internal AudioRecognizer(ISpeechRecognitionEngine engine)
     : base()
 {
     Initialize();
     speechEngine = engine;
 }
 /// <summary>
 /// Constructor.
 /// </summary>
 public AudioRecognizer()
     : base()
 {
     Initialize();
     speechEngine = new SpeechRecognitionEngineWrapper();
 }