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In 2025, People Will Try Living in This Underwater Habitat
(spectrum.ieee.org)
This is a most excellent place for technology news and articles.
Hmm... maybe not? The low density of helium at 1 atm is what causes the amplification of higher frequencies in the voicebox, but in a pressurized container the gas would be higher density so it might offset the effect... I think?
They definitely sound funny even pressurised hehe