I have to admit, as a former audiobook producer, I am partial to real human readers.
What kind of books do you need converted? Old stuff might be in public domain on librevox (quality varies). Mark Steyn is an exception reader and you can download some great titles for a $40 trial membership.
There’s enough bad AI narration on YouTube so I encourage utmost discernment when making this choice. If the book has worthwhile content, don’t compromise it with clunky AI voices & pronunciation. Those distractions devalue your writing, IMO.
I have some experience in dictating audiobooks from books that no longer enjoy copyright protection. (I have done five or six so far, and have another one on deck if I can ever shake a case of bronchitis I have had for months now!)
I know there are applications that can read a PDF aloud, but in my experience, they are not pleasing to listen to. If you are interested, check out librivox.com, they have a lot of free audiobooks there.
A real "actor" reading the books aloud is WAY WAY WAY better than any "AI" crap. It is so obvious. Even if AI can fake a "reader", it can't fake "human".
What are the books you are looking for? (That are not currently existing as audio)
We produce new audio books all the time so adding one more to the list really isn’t too much trouble. Just started a new one about one of our Founding Fathers, a bio about Elias Boudinot.
You might try Natural Reader. As far as I know, it’s free: https://www.naturalreaders.com/online/
Ask freeper “progressing america.”
stephen baxter vacumn diagrams
timelike infinity
xeelee endurance
A e van vogt the silkie
vernor vinge marooned in realtime
Julian may all the saga of the pliocene excil execept the
many colored land. I have that one.
These are a few. I know they’re all over the place but I’ve been reading for 60 years. Some of them are like new all over again. I can’t remember the details but just that the book was great.
I belong to cloud library via my local public libraries.
They have audio books.
All the agatha Christie’s
And others.
Since they are librarians you do have to wade through leftist trash but good and free is available. Check with your local library.
I also subscribe to Blackstone audio app called downpour.
They have daily 3 dollar audio specials. Many older books and some dogs.
They have a deep deep catalog.