i normally listen to them at 1.75 to 2.0 , maybe a tad faster if they are slow talkers. the only issue, it take me a few seconds to adjust, so stop/starting is a pain as have to back up about 15 seconds each time. it is also very dependent on the genres fantasy or scifi fantasy speed is ok, hard scifi might not make it to 1.5, something i am trying to learn, 1.
iirc, audio books target about 150 wpm and most people read between 250 and 400 wpm.
Yeah. Lots of dependsing involved. I could process some books/pods at faster speeds, whereas I'm listening to Sowell's Vision of the Anointed and it's getting dangerous while driving because I keep stopping it to think or rewind to re-hear stuff.
Different things can definitely be processed at different speeds, but I'd still argue a few points on the drawbacks and personally I decided if it's something I'd speed up I just don't listen to it unless (unless it's just straight info). Similarly if it's something I find myself skimming I just don't bother.
I've talked with "avid readers" who will churn through Dan Brown novels skimming for basic plot points then get mad when I say they aren't reading so much as vaguely ingesting information and their completion counts aren't valid just to trigger them.
Just like people bragging at their book completion counts and they mostly read very short and shallow YA books.
But that's just a lot of my occupational snobbery since I work in a library system with a bunch of braggy women.
Generalizing wpm isn't a very good whole picture, though. Physically reading one can (and should) change speed based on the moment or content. Good writers write with that in mind and are able to control pace. That can't really happen with an audio book set in 1.5 or 2. It just becomes information, not experience, which sure is fine for a lot content.
A good voice narrator, like James Marsters doing the Dresden books, will change pace as appropriate, of course. A lot of audio narrators suck, of course, and a lot of podcasts can be double speeded, just like a lot of books are skimmable, and I decided to just not waste my time with any of them.