private void testSettings()
{
if (HasValidPreferenceValues())
{
int volume = Convert.ToInt16(tbVolume.Text);
int rate = Convert.ToInt16(tbRate.Text);
int pitch = Convert.ToInt16(tbPitch.Text);
Context.AppTTSManager.ActiveEngine.SetVolume(volume);
Context.AppTTSManager.ActiveEngine.SetRate(rate);
Context.AppTTSManager.ActiveEngine.SetPitch(pitch);
Context.AppTTSManager.ActiveEngine.Speak(Common.AppPreferences.UserVoiceTestString);
}
}