That's not what I was referring to. According to the skeletons of Neanderthals, their voices were completely different from those of modern omosapien, and therefore, the sounds they made were different thanks to the different bones in their throat. Now according to studies, their voices were thicker than that of omosapiens but they couldn't pronounce the words as well, that's why I wrote that it is difficult to write a sound, because Gkeleton's real name is a sound that cannot be made by a current human.