I have several really long text files that I'd like to turn into audio read by a TTS voice. Is there an accessible app that can generate an audio file, whether it be aiff, mp3, m4a, or another format? I can always convert to my preferred format. I'm using mac OS 10.15 Catalina.
The longest file is probably going to be maybe 48 hours long. I'd prefer it in audio format as opposed to text, because I really like my audiobook player app on my tablet, so when it all comes down to it, I want to be able to listen to it that way.
Thanks for any help.