Seismology Create Talk0 Category page This page needs content. You can help by adding a sentence or a photo! Add to this page! “Infrasound is sound with a frequency too low to be detected by the human ear. The study of such... Infrasound Pages in category "Seismology" This category contains only the following page. I Infrasound Retrieved from "http://psychology.wikia.com/wiki/Category:Seismology"