I find the machine-generated ones to be more rhythmic and to have intonations with more consistent rises and falls in tone. I guessed the last three correctly b

I find the machine-generated ones to be more rhythmic and to have intonations with more consistent rises and falls in tone. I guessed the last three correctly based on listening for this. The first one I guessed wrong but in that case I was trying to differentiate them based on other tells.