The audio for طَويل sounds to me like "poweel" while I'd expect "toweel" instead. Is that just due to audio quality ?
Yeah I think so. Could be the speakers (to me it sounds ok). Sometimes though because we are not used to the sound of something, our brain tends to associate this sound to whatever is known in our background language (e.g. an Arab speaker, unless being focused, won't find it easy to differentiate between B and P).
But there should still be a bigger difference to the T sound. I listened to this phrase on repeat an i still hear a B/P sound
I'm using headphones right now and listening. I hear it as a plosive-velarized T ط
My brain hears the Duo recording as "poweel" as well (US English speaker) but I think it's because I haven't learned to differentiate this sound. When I listen to the Arabic pronunciations on Forvo, I can hear most of them as T or P.