public void SpeakToRawStream(string text, Stream stream)
        {
            StreamAudioTarget audio = new StreamAudioTarget();

            audio.Stream      = stream;
            audio.WriteHeader = false;
            Speak(text, audio);
        }
        public void SpeakToWavStream(TextReader text, Stream stream)
        {
            StreamAudioTarget audio = new StreamAudioTarget();

            audio.Stream      = stream;
            audio.WriteHeader = true;
            Speak(text, audio);
        }