internal void SetVoice(string name, CultureInfo culture, VoiceGender gender, VoiceAge age, int variant)
        {
            TTSVoice engine = _voiceSynthesis.GetEngine(name, culture, gender, age, variant, false);

            if (!engine.Equals(_ttsVoice))
            {
                _ttsVoice      = engine;
                _fNotInTextSeg = true;
            }
        }