Balabolka

If you’re not afraid of a few extra features, check out Balabolka. It’s interface is less straight-forward than other options, but you gain control over things like speed and pitch:

Balboka is notable for being able to open DOC/DOCX, TXT, PDF, EPUB and ODT files directly – meaning you can open your favorites in moments. It can also convert files to MP3, making it easy to listen to a document on your phone or MP3 player. There’s even batch conversion, if you want audio copies of multiple documents.

Read more about Balabolka for Windows, because it’s probably the app you will want to use.