infrasound
suomi-englanti sanakirjainfrasound englanniksi
wave|Sound waves having a frequency below the human audible range (below about 20 Hz).
(quote-video game)|location=Redwood City|publisher=Electronic Arts|year=2008|system=PC|scene=Elcor Codex entry|isbn=9780784546642|oclc=246633669|passage=Elcor speech is ponderous and monotone. Among themselves, scent, slight movements, and subvocalized infrasound convey shades of meaning that make a human smile seem as subtle as a fireworks display. Since their subtlety can lead to misunderstandings with other species, the elcor often go out of their way to clarify when they are being sarcastic, amused, or angry.