Well think of it this way: unless our brains are recording the audio exactly the same way a computer does , there has to be a way to time-stamp the information. Otherwise it would be just a jumble of incoherent sounds. Take what I’m writing for example: you are reading from left to right. So all is good. Now imagine if every word I typed was written on a separate scrap of paper and put into a bag. You put your hand in the bag and pull out words randomly. Total nonsense. But if I put a number on each one you could reconstruct the meaning.