It's Laurel. Or, rather is was supposed to be. BUT there was background distortion in the original recording, causing an unclean version to be uploaded/circulated. WHICH is why most people hear Yanny. IN FACT, the people who heard the "incorrect" Yanny have a wider and more correct audio spectrum than those who heard Laurel.
Confused? Annoyed? Make it go away!
Want more? This old one is way better, and uses actual words