What is infersound?

Infrasound refers to sound waves with frequencies below the lower limit of human hearing, typically below 20 Hz. These low-frequency sounds can be generated by natural events like earthquakes, volcanic eruptions, and thunder, as well as by human activities such as traffic and industrial processes. While humans cannot hear infrasound, it can be felt as vibrations and has been studied for its effects on both animals and humans, including potential impacts on health and behavior.