No matter where you are, your voice is a product of how swiftly pressure waves move through your larynx and the frequency at which your vocal cords vibrate. But when shouted into different gases of varying densities, the same noises take on new forms. Here’s how a few extraterrestrial atmospheres could change your tune.
Human vocal cords quiver at frequencies adapted to a Goldilocks atmosphere— not especially dense or light. Our air’s plentiful nitrogen and scant carbon-dioxide molecules don’t absorb many vibrations, so sound also happens to carry well.
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