June 5, 2023

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Why do you hear the sound of the sea when you put seashells to your ear?

Why do you hear the sound of the sea when you put seashells to your ear?

In an attempt to hear the sounds of the oceans and oceans, when everyone picks up from the shores of the ocean, they automatically put their ear to the oceans, but why are ocean-like sounds heard inside the shell?

“It’s not the sound of the ocean, but because you have a clamshell in your ear, it makes sense for people to think it might be,” said Trevor Cox, professor of acoustic engineering at the University of Salford in England.

“You hear ambient or background noises that are amplified by the physical properties of the tibia,” said Andrew King, director of the University of Oxford’s Center for Integrative Neuroscience and head of the Oxford Group’s Auditory Neuroscience.

King explained that the “hard, curved surfaces” inside the shells reflect sound waves, causing the waves to bounce back into the shell. Accordingly, in an attempt to explain what audible sound is, King told LiveScience: “The cortex acts as a resonator, amplifying certain sound frequencies so that they are louder without putting the shells near your ear.”

According to King, the frequencies you hear depend on the size and shape of the tiles, and if the tiles are irregularly shaped, they will resonate at multiple frequencies.

“The shell is like a wind instrument,” Cox said. “It has a range of resonant frequencies where the air inside the envelope vibrates with the greatest force. Hold the envelope to your ear. It’s the frequencies in the ambient sound that are amplified, and as the sound changes, your brain focuses on it.”

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According to both Cox and King, you don’t actually need a seashell to hear the ocean, and you can have a similar experience at home using a cup or bowl.

“Placing other objects or bending your arm to some extent has the same effect — next to your ear, what you hear again is determined by the size and shape of the object,” King said. Ask anything. “You wouldn’t hear anything in a completely soundproof room,” King said.

“If I walk into an anechoic room at the University of Salford, which is a completely silent room, I won’t hear anything because there’s no ambient sound,” Cox said.