Özet: How far do you have to move our slider to hear one name or the other?

The internet erupted in disagreement on Tuesday over an audio clip in which the name being said depends on the listener. Some hear "Laurel." Others hear "Yanny."

We built a tool to gradually accentuate different frequencies in the original audio clip. Which word or name do you hear, and how far do you have to move the slider to hear the other? (The slider's center point represents the original recording.)

Let us know when you hear the words change and help us learn where Yanny people become Laurel people (and vice versa).

The clip and original "Yanny or Laurel" poll were posted on Instagram, Reddit and other sites by high school students who said that it had been recorded from a vocabulary website playing through the speakers on a computer.

One detail may frustrate some and vindicate others: The original clip came from the vocabulary.com page for "laurel," the word for a wreath worn on the head, "usually a symbol of victory."

(The controversial audio clip)

The source "laurel"

A spectrogram of a vocabulary.com clip of the word "laurel" shows strong lower frequencies and relatively faint higher frequencies.

An ambiguous recording

Playing the "laurel" clip over speakers and re-recording it introduced noise and exaggerated the higher frequencies.

Those higher frequencies may have led to confusion over whether the word was Laurel or Yanny.

A simulated "Yanny"

For comparison, a spectrogram of the same vocabulary.com voice saying "Yanny" shows a similar pattern of strong high frequencies.

The spectrogram was created by merging clips of the voice saying "Yangtze" and "uncanny."

(The controversial audio clip)

The source "laurel"

A spectrogram of a vocabulary.com clip of the word "laurel" shows strong lower frequencies and relatively faint higher frequencies.

An ambiguous recording

Playing the "laurel" clip over speakers and re-recording it introduced noise and exaggerated the higher frequencies.

Those higher frequencies may have led to confusion over whether the word was Laurel or Yanny.

A simulated "Yanny"

For comparison, a spectrogram of the same vocabulary.com voice saying "Yanny" shows a similar pattern of strong high frequencies.

The spectrogram was created by merging clips of the voice saying "Yangtze" and "uncanny."

The source "laurel"

A spectrogram of a vocabulary.com clip of the word "laurel" shows strong lower frequencies and relatively faint higher frequencies.

(The controversial audio clip)

An ambiguous recording

Playing the "laurel" clip over speakers and re-recording it introduced noise and exaggerated the higher frequencies.

Those higher frequencies may have led to confusion over whether the word was Laurel or Yanny.

A simulated "Yanny"

For comparison, a spectrogram of the same vocabulary.com voice saying "Yanny" shows a similar pattern of strong high frequencies.

The spectrogram was created by merging clips of the voice saying "Yangtze" and "uncanny."

One way to understand the dynamics at work is to look at a type of chart called a spectrogram -- a way to visualize how the strength of different sound frequencies varies over time. The spectrograms above show that the word "laurel" is strongest in lower frequencies, while a simulated version of the word "yanny" is stronger in higher frequencies. The audio clip shows a mixture of both.

By using the slider to manipulate which frequencies are emphasized, it makes one word or the other more prominent.

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Sources: Vocabulary.com, Vocal Tract Development Laboratory

Daniel Victor and Maya Salam contributed reporting.