"What we do know is when you modulate the base of each word you may hear one or the other", said Cavanaugh.
Richmond added: "It's an interesting example of how people's ears are different, and that your hearing changes over time, with the most common thing being that is, as people age, they lose high frequency response". "I definitely hear Yanny", "I hear Laurel, I hear laurel".
Doctor David Holmes with Livingston Audiology has been in the ear business for almost 30 years. So what do you hear? Now an audio file has friends, family members and office mates questioning one another's hearing, and their own.
The sound jumped to prominence when Roland Szabo, an 18-year-old high school student in Lawrenceville, Georgia, posted it on Reddit.
Listen to when the frequency in the recording is shifted. But when he tried the clip again back at his desk, he heard "laurel".
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The creator of the viral sensation spoke out and sorry to say "Yanny" listeners, he confirmed he said "Laurel".
More than one person online yearned for that simpler time in 2015, when no one could decide whether the mother of the bride wore white and gold or blue and black.
There are plenty of political and other controversies to keep people busy on social media.
That's right. The question comes from an audio clip which you've probably heard coming out of a speaker or phone in the past couple days.
"It just depends on the audio and the equipment that you're using", he said. Let us know in the comments section below.
The brain and ear together makes a quite a toolset, selectively listening and/or blocking what we hear.