public async Task Speak(string text)
{
await Threading.MarshallToUiThread(async() =>
{
if (audioOut.CurrentState == Windows.UI.Xaml.Media.MediaElementState.Playing)
{
audioOut.Stop();
}
var voiceStream = await speechSynth.SynthesizeTextToStreamAsync(text);
if (voiceStream == null)
{
System.Diagnostics.Debug.WriteLine($"Could not synthesize voice stream from text: {text}.");
}
audioOut.SetSource(voiceStream, voiceStream.ContentType);
audioOut.Play();
});
}