In May 2018, internet users were split over whether a mysterious sound was either "Yanny" or "Laurel".
"Yanny or Laurel" is a illusion (auditory) which became popular in mid 2018. This audio related illusion was from a short audio recording which sounds of two words.
When the audio became viral, almost the American internet users were divided into two groups. First group claimed that the audio sound "Laurel" while other group opposes with the "Yanny" word.
After analysis of the audio recording's frequencies, it was later confirmed that both sets of sound are present in that recording. It is a mixed recording. Higher frequency sounds in "Yanny" and Lower sounds the word "Laurel".