Subauditory

Subauditory refers to sounds that are below the threshold of normal human hearing. This means that the frequency of the sound waves is too low for the human ear to perceive. While the exact lower limit of human hearing varies from person to person, it is generally considered to be around 20 Hertz (Hz). Sounds with frequencies below this range are classified as infrasound.

Subauditory sounds are not limited to artificially generated noises. They can occur naturally in the environment, such as from earthquakes, volcanic eruptions, strong winds, and ocean waves. Some animals, like elephants and whales, are known to communicate using infrasound over long distances.

The effects of subauditory sounds on humans are a subject of ongoing research and debate. While not consciously perceived, some studies suggest that prolonged exposure to infrasound, especially at high intensities, might cause feelings of unease, anxiety, or even physical symptoms like nausea or dizziness in some individuals. However, the scientific consensus on these effects is not definitive, and more research is needed to understand the extent and mechanisms of any potential human impact. It is important to distinguish subauditory from subliminal, which refers to stimuli presented below the conscious threshold of perception, but not necessarily at a frequency outside of human hearing.