According to many poskim, in order to have the mitzvah of ‘talmud torah’ you need to either say the words or hear it from a rebbi. If you don’t hear it then you have a zchus of thinking in learning but you are not yotzei the chiyuv of ‘talmud torah’.
Even listening to a recording is not the same as hearing it from the mouth of a rebbi for this mitzvah.