Who I have the same questioned this topic

I have gone in to Accessibility and selected Text to speech and only see Samsung text to speech as the TTS engine. Selected settings, but it only has English as the language, and "Install voice data". I don't see anywhere that you can turn off text to speech.

Talkback is turned off. Select to Speak is turned off.

I don't mind getting a notice that a "Message" has arrived, but I don't want it read aloud.  This just started 2 weeks ago, and I don't know if it was a system update or if I changed a setting that activated it. 

Thanks for any help.

Ron