We have a new version of "The Dress".
An audio clip is setting off debates as listeners argue over which word is being repeated.
What word do you hear in the clip above?
Chrissy Tiegen wrote: "it's so clearly laurel".
The audio recording is making the viral rounds across social media platforms after originating on Reddit this week.
"Part of it involves the recording", Brad Story, a speech, language and hearing professor at the University of Arizona, said to CNN.
"They can be seen in two ways, and often the mind flips back and forth between the two interpretations", Alais told The Guardian. Lots of levels of sounds being recorded will lead to degradation of the quality of the audio itself.
And older adults tend to start losing their hearing at the higher frequency ranges. That debate happened, according to some experts, based on how our eyes took in light.
Acoustic analysis of the audio reveals that the trick lies in sound frequency. So if you're listening on your phone, laptop speakers or through cheap headphones, you might hear something different than with a high-quality sound system, CNET reports.
This explains why young people said they heard Yanny while those of a certain age proclaimed the clip voted for Laurel.
Experiences also play a role.
If that wasn't bad enough, Prof Hazan also points out that there are two other very important reasons why we could be hearing completely different words.
"The energy concentrations for Ya are similar to those for La", she said.
Whether you hear an ascending or descending pattern depends on what your brain is expecting to hear, and what your brain is expecting to hear depends on your lived experience.