The debate over whether an audio clip says "Yanny" or "Laurel" is tearing the Internet apart. Others are paying attention to the high frequency tones, so they hear "Yanny".
We also took to the streets to find out what Ottawans heard, and you can check out the responses in the video above.
A straw poll carried out among staff in AFP's Washington bureau counted 17 for Yanny, and 14 for Laurel.
But he said it was also more hard to determine the word in this particular recording because it is "not real speech". "If you lose the high frequencies, the illusion goes away".
The cartoon characters, crafted to look like their users, are shouting the words heard in the clip.
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.
Fortnite's challenges for week 3 of season 4 are now live
Players need to search 10 rubber duckies in total to complete the challenge and due to their small size they can be hard to find. Grabbing the secret star collectibles that appear on the map will instantly rank you up one full tier.
Maradona Joins Belarus' Brest As Chairman
They face BATE in the Belarusian Cup final on Sunday, where they will seek to defend the trophy they won past year . He had previously managed Al Wasl, but was dismissed in July 2012, midway through a two-year contract.
Starbucks To Foray into China
Starbucks has announced ambitious plans to double the number of stores across China to 6,000 locations by the end of 2022. Currently, 60 percent of transactions in its China stores are through mobile payments.
When he took the bass out, he says he still hears "Laurel".
"We're not listening to an actual speaker - we're listening to manipulated speech, and that is a bit harder", he said.
"Age can play a role, as well as expectations, Spoor said". She said she heard Laurel.
She provides another example. Amid the background noise, you're able to focus on what your dining partner is saying.
Next, listen to this clip, which is no longer noisy. It's crucial, she adds, to "use your experience with sound and what you know about it to fill in the gaps".