There's an audio recording going viral right now where a computer-generated voice is either saying "Yanny" . . . or "Laurel." And apparently there are a few factors that influence what you hear, including things like how well your speakers play lower frequencies.
According to a poll on Buzzfeed, 50% of people said they heard Yanny . . . 36% heard Laurel . . . and 13% could hear both.
So what's going on? Apparently it all has to do with the audio frequencies.
Younger people are more likely to hear "yanny," because that's what's coming through in higher frequencies that they can still hear. You're also more likely to hear "yanny" in bad speakers, because they don't handle lower frequencies so well.
But with good headphones, you'll probably hear "laurel" . . . which is what the voice is ACTUALLY saying. I think. Maybe.