public static void SpeakSsml(string ssml, string defaultVoiceName, MemoryStream memoryStream, SpeechSynthesizer speechSynthesizer = null)
{
speechSynthesizer = speechSynthesizer ?? SpeechSynthesizer;
lock (speechSynthesizer)
{
if (!string.IsNullOrEmpty(defaultVoiceName))
{
speechSynthesizer.SelectVoice(defaultVoiceName);
}
SpeechSynthesizer.SetOutputToAudioStream(memoryStream, new SpeechAudioFormatInfo(EncodingFormat.Pcm, SPEECH_SAMPLE_RATE, SPEECH_BITS_PER_SAMPLE, SPEECH_CHANNELS, SPEECH_SAMPLE_RATE * SPEECH_CHANNELS * SPEECH_BITS_PER_SAMPLE / 8, 2, null));
//speechSynthesizer.SetOutputToWaveStream(memoryStream);
speechSynthesizer.SpeakSsml(ssml);
}
}