There are a lot of legends about infrasound. It can make you see ghosts, some say; others insist it can make you poop your pants. Elephants and whales use it to chat across thousands of kilometers, but you’ve never heard it in your life – in fact, from a human perspective, even the word “infra sound ” is kind of misleading. The rest of this article is behind a paywall. Please sign in or subscribe to access the full content.

So what’s the truth?

What is infrasound?

With its prefix being Latin for “below”, infrasound is exactly what it says: sound with a frequency below the normal limit of human hearing. In other words: real, real low noises.

The lower limit on what humans can hear, at least without workarounds like increasing the sound pressure, is about 20 Hertz – that is, a nois

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