Do you hear "Laurel" or "Yanny"? An expert says your answer could depend on your level of hearing loss.
A four-second audio clip of a computer-generated voice saying a word has divided the internet.
The debate, which has been compared to a dispute over the colour of a dress in 2015, had some insisting they heard "Laurel".
External Link: Ellen tweet: Literally everything at my show just stopped to see if people hear Laurel or Yanny. I hear Laurel. External Link: Ted Berg tweet: The thing definitely says Laurel, there's no way anyone could hear that as Yanny, anyone who says they do is lying for shock value, the end, gfy
Others said it was definitely "Yanny".
Meanwhile, some could hear both.
If Google searches were anything to go by, "Laurel" was winning.
'Part of this has to do with hearing loss'
Some people went as far as adjusting audio levels to try to get to the bottom of it, with some pointing out it could have to do with whether you can hear high frequencies.
External Link: Dylan Bennett tweet: Okay, you're not crazy. If you can hear high freqs, you probably hear "yanny", but you *might* hear "laurel". If you can't hear high freqs, you probably hear laurel. Here's what it sounds like without high/low freqs. RT so we can avoid the whole dress situation External Link: Steve Pomeroy tweet: Ok, so if you pitch-shift it you can hear different things
Audiologist Dr Bill Vass told ABC Canberra it could be like a high-pitched mosquito ringtone school students use, which can usually only be heard by people under 25 years old — making it inaudible to many teachers.
"Part of this has got to do with some hearing loss associated with as you get older, that's going to certainly affect the high frequency more than the low frequency," Dr Vass said.
But he said it was also more difficult to determine the word in this particular recording because it is "not real speech".
"We're not listening to an actual speaker — we're listening to manipulated speech, and that is a bit harder," he said.
But failing those theories, he said it "could just be a big internet hoax".