https://learn.microsoft.com/en-us/uwp/api/windows.media.speechsynthesis.speechsynthesizer.synthesizetexttostreamasync?view=winrt-22000
SpeechSynthesizer.SynthesizeTextToStreamAsync(String) Method (Windows.Media.SpeechSynthesis) -...
Asynchronously generate speech output from a string.
windows mediastringmethod