Is it true that humans cannot hear sound waves below 20 Hz?

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In addition, people cannot hear infrasound waves, but they can feel them. Do you know what infrasound feels like? Think about the discomfort of dizziness and nausea caused by motion sickness and seasickness, that’s right. That is what it feels like for people to be in an infrasound environment.

Although infrasound waves cannot be heard by human ears, they are no less harmful than noise. The harm of infrasound waves to the human body is mainly caused by the vibration of sound waves and the internal organs of the human body. Among them, the 5 Hz infrasound wave is most consistent with the vibration frequency of the human internal organs. When this kind of sound wave sounds strongly, a person's internal organs will be shattered in violent vibrations, followed by severe internal bleeding and death. The most interesting thing is that the brain's vibration frequency deviates from 5 Hz to a certain extent, so when the organs in the chest and abdomen rupture, people can clearly feel it all.