Thank you in advance.
More advanced level is allowing text-to-speech only for those who have enough Revlo or Ankhbot points to filter out trolls and inappropriate comments.
Just type some text, select the language, the voice and the speech style and emotion, then hit the Play button.
This includes Twitch TTS trolls, lines, and spam.
The slider next to Alert Box v2 Beta should appear black and white instead of green and white.
Now that text-to-speech has been enabled, you'll want to make sure your stream obeys Twitch's Terms of Service, in case anyone abuses your text-to-speech function by submitting profanity.