I enjoy having the ebooks read out loud. My previous solution has always been to highlight the chapters I want to read and then turn on voiceover in Adobe Reader on my Mac. The advantage is that I can select from all sorts of voices and control the pitch and speed. The disadvantage is that it sometimes takes quite a bit of time to highlight things and subtitles and page numbers often get read out as well, interrupting my reading.
I just tried iBooks and although .epub files read marvellously, it doesn't read .pdf files.
Is there any software that is available that can read ebooks out loud, preferably one that works for pdf files and lets me control pitch and speed? I would like to have books read aloud to me on my (google) tablet, especially as most of the books I'm reading are textbooks and don't have audiobook versions.