问从Speechlib中的HRESULT: 0x8004503A获取异常

EN

 public partial class LEDPlayService : ServiceBase
    {
        static int MessageID = 0;
        static SpeechLib.SpVoice VoiceObj = new SpeechLib.SpVoice();
        static System.Timers.Timer myTimer = new System.Timers.Timer();
        protected override void OnStart(string[] args)
         {

            myTimer.Elapsed += new ElapsedEventHandler(OnElapsedTime);
            //This statement is used to set interval to 1 minute (= 60,000 milliseconds)
            myTimer.Interval = 60* 1000;
            // enabling the timer
            myTimer.Enabled = true; ;
            myTimer.AutoReset = false;
        }

        private static void OnElapsedTime(object source, ElapsedEventArgs e)
        {
            ((System.Timers.Timer)source).Stop();
            myTimer.Enabled = false; ;
            bool result =PlayAudio("Hello prithvi");
            ((System.Timers.Timer)source).Start();
            myTimer.Enabled = true;

            // TraceService(""+DateTime.Now.TimeOfDay);
        }

        public static bool PlayAudio(string text)
        {
          bool res = false;
            try
            {
                VoiceObj.Speak(text, SpeechLib.SpeechVoiceSpeakFlags.SVSFDefault);
                res = true;
            }
            catch(Exception e)
            {
                TraceService("error in sound........."+e.InnerException+e.Message+"   "+e.ToString());
                res = false;
            }
            return res;
        }

    }