Quick detour to System Preferences confirms that the old-fashioned Speech utility is still there, alongside the heavy-duty Voice Over which I do not understand (but note with interest that lower-case "content" is pronounced "conTENT", like the verb/adjective, while upper-case "Content" is pronounced "CONtent" like the noun). Computer-generated speech turns out to be much better than it was 10-20 years ago when it all came out sounding like someone with a strong Swedish accent. Let alone more decades ago, when it sounded like, well, computer-generated speech.
I pasted your post (Danwebsol) into a text editor and globally changed all the o's to omicrons. The Speech utility treated them like spaces, making it pretty obvious that something was amiss :)
But a check for non-Latin characters is faster and more thorough. Or tell your editor to change the encoding to ASCII or Latin-1 and see if it raises a fuss.