I have just one question/note to make: I tried a book in the Mexican Spanish language and noticed that it fails to catch the accents on the words (emphasis on words with tildes and strong accents on that syllable) and I am thinking it is because of the .pdf parsing since the Piper Voice Sample on their webpage example does it properly (on both avbailable voices).
Do you have an idea of what could exactly be happening and how I can try to solve it?
Thank you very much for the tool again!!!
Update: Ohh ok I just checked the repo Issues and found the one about polish accents, I tried "--speak-diacritics" but got the same "Error: failed to read file passed as input to piper: read /tmp/ebook-convert-xxxxxxx.txt file already closed". If I skip the diacritics option it converts fine.