c# 语音（二）文字生成WAV文件

　private void CreateWAVFile(string text)
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.Filter = "所有文件 (*.*)|*.*|WAV 格式文件 (*.wav)|*.wav";
sfd.Title = "保存到 wave 文件";
sfd.FilterIndex = 2;
sfd.RestoreDirectory = true;
if (sfd.ShowDialog() == DialogResult.OK)
{
SpeechStreamFileMode SpFileMode = SpeechStreamFileMode.SSFMCreateForWrite;
SpFileStream SpFileStream = new SpFileStream();
SpFileStream.Open(sfd.FileName, SpFileMode, false);
speech.AudioOutputStream = SpFileStream;
speech.Rate = -1;
speech.Volume = volume;
speech.Speak(text, SpeechVoiceSpeakFlags.SVSFlagsAsync);
speech.WaitUntilDone(Timeout.Infinite);
SpFileStream.Close();
}
}